Publications

Publications 1968

• W. Walter, E. Schaumann and K.-J. Reubke
  Separation and properties of the cis-trans isomers of N-alkylthioformamides
  Angew. Chem. 80, 448 1968

Publications 1969

• W. Walter, H.-P. Kubersky, E. Schaumann and K.-J. Reubke
  H-NMR spectroscopic evidence of hindered rotation in primary thioamides on ^{15N-thioacetamide}
  Liebigs Ann. Chem. 719, 210 1969
• W. Walter, E. Schaumann and H. Paulsen
  On the magnetic anisotropy of the thioamide group
  Liebigs Ann. Chem. 727, 61 1969

Publications 1971

• W. Walter, E. Schaumann etc.
  NMR spectroscopic studies and mechanism of isomerization of thioamide anions
  Chem. Ber. 104, 4 1971
• W. Walter, E. Schaumann
  Studies on hindered rotation in thiohydroxamic acids
  Liebigs Ann. Chem. 743, 154 1971
• W. Walter, E. Schaumann
  Temperature dependence of the NMR spectra of O,N-dialkylhydroxylamines
  Liebigs Ann. Chem. 747, 191 1971
• W. Walter, E. Schaumann
  The Chemistry of Thiohydroxamic Acids
  Synthesis, 111 1971
• W. Walter, E. Schaumann
  Separation of the geometric isomers and determination of the rotational barriers in N-alkyl thioamides
  Chem. Ber. 104, 3361 1971
• W. Walter, E. Schaumann, J. Voß
  The Difference in the Barrier Heights for Internal Rotation between Amides and Thioamides
  Org. Magn. Res. 3, 733 1971

Publications 1972

• W. Walter, E. Schaumann, H. Rose
  Temperature Dependence in the NMR spectra of Urea, Thiourea, and Selenourea
  Tetrahedron 28, 5233 1972

Publications 1973

• W. Walter, E. Schaumann, H. Rose
  ^{14N-decoupled}H-NMR spectra and measurement of the rotational barriers in primary amides and thioamides
  Org. Magn. Res. 5, 191 1973

Publications 1974

• E. Schaumann, S. Sieveking, W. Walter
  Cycloaddition reactions of heterocumulenes, I: Preparation of stable 1,4-dipoles from β,β-dialkyleneamines and sulfonyl isocyanates
  TetrahedronLett. 1974, 209
• W. Walter, M. F. Sieveking, E. Schaumann
  The Site of Protonation in Primary Thioamides
  TetrahedronLett. 1974, 839
• E. Schaumann
  NMR spectroscopic studies on hindered rotation in primary amides and thioamides
  Angew. Chem. 86, 316 1974
• Working group at the University of Hamburg (including E. Schaumann)
  An orientation unit for first-year science students. Chemistry as an example Blickpunkt Hochschuldidaktik, published by the Arbeitsgemeinschaft für Hochschuldidaktik, Hamburg 1974
• E. Schaumann and W. Walter
  Thiophilic addition of phenyllithium to thioketenes
  Chem. Ber. 107, 3562 1974
• E. Schaumann, S. Sieveking, W. Walter
  Cycloaddition Reactions of Heterocumulenes, II: Cycloadditionof β,β-Disubstituted Enamines with Sulfonylisothiocyanates
  Tetrahedron 30, 4147 1974
• E. Schaumann, E. Kausch, W. Walter
  Cycloaddition reactions of heterocumulenes, III: Conversion of heterocumulenes with 2-dialkylamino-3,3-dimethylazirines
  Chem. Ber. 107, 3574 1974
• E. Schaumann, S. Sieveking, W. Walter
  Cycloaddition reactions of heterocumulenes, IV: The reaction of dimethylketene-O,N-acetals with iso(thio)cyanates
  Chem. Ber. 107, 3589 1974

Publications 1975

• W. Walter, M. Franzen-Sieveking, E. Schaumann
  Kinetics of the Acid-catalyzed E-Z-Isomerization of N-Neopentylthioformamide in o-Dichlorobenzene
  J.Chem. Soc., Perkin Trans. II 1975, 528
• E. Schaumann, A. Röhr, S. Sieveking, W. Walter
  Cycloaddition reactions of heterocumulenes, V: X-ray structural analysis of a stable dipole
  Angew. Chem. 87, 486 1975; Angew. Chem. Int. ed. Engl. 14, 493 1975
• E. Schaumann, E. Kausch, W. Walter
  Ring-opening reactions of 3-dialkylaminoazirines with carboxylic acid derivatives
  Chem. Ber. 108, 2500 1975

Publications 1976

• E. Schaumann, S. Harto and G. Adiwidjaja
  X-ray structural analysis of a dialkyl thioketene
  Angew. Chem. 88, 25 1976; Angew. Chem. Int. ed. Engl. 15, 40 1976
• E. Schaumann
  Cycloaddition reactions of heterocumulenes, VI: Reaction of thioketenes with azomethines
  Chem. Ber. 109, 906 1976
• E. Schaumann, S. Sieveking
  Cycloaddition reactions of heterocumulenes, VII: 1,4-dipoles of vinylidene diamines and isocyanates or isothiocyanates
  Liebigs Ann. Chem. 1976, 2284

Publications 1977

• E. Schaumann, E. Kausch, J.-P. Imbert, K.-H. Klaska, R. Klaska
  Cycloaddition Reactions of Heterocumulenes, VIII: Crystal Structure and Valence Tautomerism of 5-Dimethylamino-4,4-dimethyl-2-thiazoline-2-thiolate
  J.Chem. Soc., Perkin Trans. 2 1977, 466
• E. Schaumann, E. Kausch, W. Walter
  Cycloaddition reactions of heterocumulenes, IX: 1:1, 2:1 and 3:1 adducts from the reaction of isothiocyanates with 3-dimethylamino-2,2-dimethyl-2H-azirine
  Chem. Ber. 110, 820 1977
• E. Schaumann, F.-F. Grabley
  Preparation and properties of α-alkoxyalkylphosphonic acid esters
  Liebigs Ann. Chem. 1977, 88
• E. Schaumann, S. Grabley, K.-D. Seidel, E. Kausch
  Cycloaddition reactions of heterocumulenes, X: Competition between 1,2- and 1,3-ring opening in the reaction of 3-dimethylamino-2-phenyl-2H-azirines with carbon disulfide
  TetrahedronLett. 1977, 1351
• E. Schaumann, E. Kausch, K.-H. Klaska, B. Metz
  Molecular Structure of the Unusual Product of Hydrolysis of a Carbodiimide
  Naturwissenschaften 64, 528 1977
• E. Schaumann, E. Kausch, K.-H. Klaska, R. Klaska, O. Jarchow
  The Crystal and Molecular Structure of the Cycloadduct from an Activated Carbodiimide and Methyl Isothiocyanate
  J.Heterocycl. Chem. 14, 857 1977
• E. Schaumann, W.-R. Klein
  Thiophilic addition of phenyllithium to thioketene-S-oxides
  TetrahedronLett. 1977, 3457
• E. Schaumann, F.-F. Grabley
  Stable silylthioketenes by thio-claisen rearrangement
  TetrahedronLett. 1977, 4307
• E. Schaumann, U.
  Behrens α-Thiolactones from thioketenes
  Angew. Chem. 89, 750 1977; Angew. Chem. Int. ed. Engl. 1977 16, 722

Publications 1978

• E. Schaumann, H. Mrotzek
  Cycloaddition reactions of heterocumulenes, XI: Reaction of the monomeric and dimeric tert-butylcyano ketene with azomethines
  Chem. Ber. 111, 661 1978
• E. Schaumann, E. Kausch, J.-P. Imbert, G. Adiwidjaja
  Cycloaddition reactions of heterocumulenes, XII: Reaction of persubstituted isothioureas with isocyanates
  Chem. Ber. 111, 1475 1978
• E. Schaumann, E. Kausch, S. Grabley, H. Behr
  Cycloaddition reactions of heterocumulenes, XIII: Structure and reaction behavior of the 1:1 adducts of 3-dialkylamino- -2,2-dimethyl-2H-azirines and carbon disulfide
  Chem. Ber. 111, 1486 1978

• E. Schaumann, J. Ehlers and U. Behrens

  γ-Sultenes and 1,3-oxazolidinethiones by 1,3-dipolar cycloaddition of thioketenes to azomethines
  Angew. Chem. 90, 480 1978; Angew. Chem. Int. ed. Engl. 17, 455 1978

• E. Schaumann, E. Kausch, E. Rossmanith
  Cycloaddition reactions of heterocumulenes, XIV: 1,4-dipoles from persubstituted guanidines and heterocumulenes
  Liebigs Ann. Chem. 1978, 1543
• E. Schaumann, E. Kausch
  Cycloaddition reactions of heterocumulenes, XV: Conversion of persubstituted isothioureas with isothiocyanates and with carbon disulfide
  Liebigs Ann. Chem. 1978, 1560
• E. Schaumann, S. Grabley
  Cycloaddition reactions of heterocumulenes, XVI: Reaction of 3-dimethylamino-2-phenyl-2H-azirines with isocyanates and isothiocyanates
  Liebigs Ann. Chem. 1978, 1568
• E. Schaumann, H. Mrotzek, G. Adiwidjaja
  Unusual Incorporation of the Cyano Group of t-Butyl-cyanoketene into a Cycloadduct. X-Ray Structure of the Pyrimido[1,6-e](1,3,5)dioxazine Formed
  J.Chem. Soc., Chem. Commun. 1978, 820

Publications 1979

• E. Schaumann, J. Ehlers
  Cycloaddition reactions of heterocumulenes, XVII: On the mechanism of the (2+2)-cycloaddition of thioketenes with azomethines
  Chem. Ber. 112, 1000 1979
• E. Schaumann, H. Mrotzek, F. Aßmann
  Cycloaddition reactions of heterocumulenes, XVIII:Reaktion des tert-Butylcyanketens mit cyclischen Thioimidsäureestern
  Liebigs Ann. Chem. 1979, 334
• C.-P. Klages, S. Köhler, E. Schaumann, W. Schmüser, J. Voß
  Thioketyls, III: Radical Anions of Thioketenes
  J. Phys. Chem. 83, 738 1979
• E. Schaumann, J. Ehlers, W.-R. Förster, G. Adiwidjaja
  Thiirenes as intermediates in the thermolysis of 1,2,3-thiadiazoles
  Chem. Ber. 112, 1769 1979
• E. Schaumann, S. Harto and G. Adiwidjaja
  Crystal and molecular structure of a ketene, a thioketene and a thioketene S-oxide
  Chem. Ber. 112, 2698 1979
• L. Carlsen and E. Schaumann Photolysis of thioketene S-oxides
  J. Chem. Soc., Faraday Trans. 1 75, 2624 1979
• E. Schaumann, H. Behr and G. Adiwidjaja
  Zur Chemie der α-Thiocarbamoylcarbodiimide
  Liebigs Ann. Chem. 1979, 1322
• E. Schaumann, H. Mrotzek
  Azetidines and 1-Pyrrolines from an Electron-Deficient Allene and C=N Compounds
  Tetrahedron 35, 1965 1979
• E. Schaumann, F.-F. Grabley
  Thioketen-Synthesen, II: Über die Bildung von Thioketenen aus Alkylidenphosphoranen und Kohlenstoffdisulfid
  Liebigs Ann. Chem. 1979, 1702
• E. Schaumann, F.-F. Grabley
  Thioketene syntheses, III: Reaction of phosphonate carbanions with carbon disulfide
  Liebigs Ann. Chem. 1979, 1715
• E. Schaumann, J. Ehlers and H. Mrotzek
  Thioketene syntheses, IV: Thioketenes from 5-alkyl- or 5-heterosubstituted 1,2,3-thiadiazoles -indications for the involvement of thiirenes
  Liebigs Ann. Chem. 1979, 1734
• E. Schaumann and F.-F. Grabley Thioketene syntheses, V: Allyl-substituted thioketenes by thio-claisen rearrangement
  Liebigs Ann. Chem. 1979, 1746
• L. Carlsen, H. Egsgaard, E. Schaumann, J. Ehlers
  On the Thermal Decomposition of a Thioketene S-Oxide
  Chem. Ind. (London) 1979, 851

Publications 1980

• E. Schaumann, S. Grabley
  Rearrangement of α-isocyanato-N2-(arensulfonyl)amidines in 1-arsensulfonyl-3-imidazolin-2-one
  Chem. Ber. 113, 934 1980
• L. Carlsen, H. Egsgaard, E. Schaumann
  Gas-Phase Thermolysis of a Thioketene S-Oxide
  J.Chem. Soc., Perkin Trans. 2 1980, 1206
• E. Schaumann, S. Grabley, M. Henriet, L. Ghosez, R. Touillaux, J. P. Declercq, G. Germain, M. Van Meersche Competing Reaction Pathways in the Cycloaddition of 3-Dimethylamino-2H-azirines with Ketenes
  J. Org. Chem. 45, 2951 1980
• E. Schaumann, J. Ehlers, F.-F. Grabley
  Cycloaddition reactions of heterocumulenes, XIX: 1:1, 2:1 and 1:2 cycloadducts from the reaction of thioketenes with azomethines
  Chem. Ber. 113, 3010 1980
• E. Schaumann, F.-F. Grabley
  Cycloaddition reactions of heterocumulenes, XX: Reaction of allyl(trimethylsilyl)thioketenes with azomethines
  Chem. Ber. 113, 3024 1980
• M. Van Meerssche, G. Germain, J. P. Declercq, R. Touillaux, E. Schaumann, S. Grabley
  6-Dimethylamino-1,4-etheno-5,5-dimethyl-8-oxo-N,9-diphenyl-2,3,4,4a,5,8-hexahydro-1H-pyridazino
  [4,5-d]azepine-2,3-dicarboximide
  Cryst. Struct. Commun. 9, 509 1980
• L. Carlsen, H. Egsgaard, E. Schaumann, H. Mrotzek, W.-R. Klein
  Gas-Phase Thermolysis of Silylated Thionocarboxylic Acid Derivatives - a Route to Thioketens?
  J.Chem. Soc., Perkin Trans. 2 1980, 1557
• R. Ketcham, E. Schaumann
  Heterocyclic Ring-Closure Reactions.VI. Preparation and further Cyclization Reactions of 5-Imino-1,3-diphenyl-4-thioxo-2-imidazolidinone and 5-Imino-1,3-diphenyl-2,4-imidazolidinedithione
  J.Org. Chem. 45, 3748 1980
• R. Ketcham, E. Schaumann, Th. Niemer
  Heterocyclic Ring-Closure Reactions. VII A Facile Synthesis of 5-Imino-4-oxazolidinethiones and 4-Thioxo-5-oxazolidinones
  Synthesis 1980, 869
• E. Schaumann, U. Wriede, J. Ehlers
  Tetraethylammonium Hydrogensulfide - a Convenient Reagent for Thiolation of 1,1-Dichloroalkenes
  Synthesis 1980, 907
• E. Schaumann, A. Röhr, G. Adiwidjaja
  4-Thioxo-2-azetidinones from Thioketenes and Isocyanates
  TetrahedronLett. 21, 4247 1980
• E. Schaumann, F.-F. Grabley
  Selenoketenes via Selena-Cope Rearrangement of Alkynyl Allyl Selenides
  TetrahedronLett. 21, 4251 1980

Publications 1981

• E. Schaumann, H. Behr, G. Adiwidjaja, A. Tangerman, B. H. M. Lammerink, and B. Zwanenburg Reactions of Thioketene S-Oxides with Diazo Compounds. A Novel Synthesis of Heterocyclic Sulfines
  Tetrahedron 37, 219 1981
• E. Schaumann, S. Grabley, G. Adiwidjaja
  Cycloaddition reactions of heterocumulenes, XXI: (2:1)- and (3:1)-adducts from isocyanates and 3-dimethylamino-2H-azirines
  Liebigs Ann. Chem. 1981, 264
• E. Schaumann, S. Grabley, F.-F. Grabley, E. Kausch, G. Adiwidjaja
  Cycloaddition reactions of heterocumulenes, XXII: Conversion of thioketenes with 3-dimethylamino-2H-azirines
  Liebigs Ann. Chem. 1981, 277
• E. Schaumann, S. Grabley
  Cycloaddition reactions of heterocumulenes, XXIII: Nitrogen-containing five-ring heterocycles from carbodiimides or ketenimines with 3-dimethylamino-2H-azirines
  Liebigs Ann. Chem. 1981, 290
• E. Schaumann, H.-G. Bäuch, G. Adiwidjaja
  The surprising stereochemistry of the cycloaddition of vinyl ethers with isothiocyanates
  Angew. Chem. 93, 600 1981

Publications 1982

• E. Schaumann, R. Ketcham (2+2)-cycloadditions
  Angew. Chem. 94, 231 1982, Angew. Chem. Int. ed. 21, 225, 1982
• E. Schaumann, H. Nimmesgern, G. Adiwidjaja, L. Carlsen
  Cycloaddition reactions of heterocumulenes, XXIV: Selenazole derivatives from carbondiselenide and 3-dimethylamino-2H-azirines
  Chem. Ber. 115, 2516 1982
• E. Schaumann
  Thioketene syntheses, VI: Stable thioketenes by sulfurization of sterically hindered acyl chlorides
  Chem. Ber. 115, 2755 1982
• E. Schaumann, H.-G. Bäuch, S. Sieveking, G. Adiwidjaja
  Cycloaddition reactions of heterocumulenes, XXV: Cycloadducts and rearrangement products from the reaction of isothiocyanates with ketene acetals
  Chem. Ber. 115, 3340 1982
• E. Schaumann, H. Nimmesgern, G. Adiwidjaja
  A new thiiranimine synthesis
  Angew. Chem. 94, 706 1982; Angew. Chem. Suppl. 1982,1567

Publications 1983

• E. Schaumann, H.-G. Bäuch, S. Sieveking, G. Adiwidjaja
  Cycloaddition reactions of heterocumulenes, XXVI: Cycloadducts from aryl isothiocyanates and 2,2-disubstituted enamines
  Chem. Ber. 116, 55 1983
• E. Schaumann, H. Behr, J. Lindstaedt
  Cycloaddition reactions of heterocumulenes, XXVII: 2-alkylidene-1,3,4-thiadiazolines by 1,3-dipolar cycloaddition of diazoalkanes to thioketenes
  Chem. Ber. 116, 66 1983
• E. Schaumann, J. Lindstaedt, W.-R. Förster
  A new synthesis and reaction behavior of (aminoethynyl)sulfides
  Chem. Ber. 116, 509 1983
• E. Schaumann, U. Wriede, G. Rühter
  A new approach to thiocarbonyl compounds
  Angew. Chem. 95, 52 1983; Angew. Chem. Suppl. 1983, 63
• E. Schaumann, J. Lindstaedt
  Substituent effects on the thio-Claisen rearrangement of alkynyl(allyl)sulfides
  Chem. Ber. 116, 1728 1983
• E. Schaumann, S. Fittkau
  Synthesis and Wittig-Horner Reactions of 1-(Functionally)=Substituted 2,2-Dimethylpropanephosphonic Esters (1-t-Butyl-substituted Phosphonic Esters)
  Synthesis 1983, 449
• E. Schaumann, B. Lange, K. Reinholdt
  Intramolecular Competition Experiments on Sulfide vs. Thiocarbonyl Oxidation. Evidence for Electronic and Steric Deactivation of Thiocarbonyl Groups
  J. Chem. Soc., Chem. Commun. 1983, 797

Publications 1984

• E. Schaumann, U. Wriede, G. Adiwidjaja
  1-Cyanalkylidene-substituted 1,3-dithietanones as cyanthioketene equivalents. Conversion to 1,3,5-dithiazin-4-ones and 2-azetidinethiones
  Chem. Ber. 117, 2205 1984
• V. J. Rao, V. Ramamurthy, E. Schaumann, H. Nimmesgern
  Oxidation of Thioketenes by Singlet Oxygen
  J.Org. Chem. 49, 615 1984
• E. Schaumann
  Protecting groups of the alcoholic hydroxy function
  Houben-Weyl-Müller, Methoden der Organischen Chemie, Vol. VI/1b, pp. 735-783, Stuttgart 1984
• E. Schaumann Conversion of alcohols
  Houben-Weyl-Müller, Methoden der Organischen Chemie, Vol. VI/1b, pp. 797-960, Stuttgart 1984
• E. Schaumann, S. Fittkau
  α,β-Unsaturated Thioamides via Wittig-Horner Olefination
  TetrahedronLett. 25, 2325 1984
• E. Schaumann, W.-R. Förster, G. Adiwidjaja
  Thiopenam derivatives from alkynyl(silyl)sulfides and 4,5-dihydrothiazoles
  Angew. Chem. 96, 429 1984, Angew. Int. Ed. 23, 439 1984

Publications 1985

• E. Schaumann, S. Fittkau
  Synthesis of α,β-Unsaturated Thioimidates from α-Phosphono-thioimidates and Aldehydes via Wittig-Horner Olefination
  Synthesis 1985, 172
• E. Schaumann
  Thioketenes and their derivatives
  Houben-Weyl-Müller, Methoden der Organischen Chemie, Vol. E 11, pp. 232-341, Thieme, Stuttgart 1985
• I. Khattak, R. Ketcham, E. Schaumann, G. Adiwidjaja
  Reactions of Isothiocyanates with Cyanothioformamides. Cyclization of 5-imino-4-thioxo-2-imidazolidinones and 5-imino-2,4-imidazolidinedithiones to 5,7-dihydrodiimide=azo[4,5-b:4',5'-e]pyrazine-2,6(1H,3H)-diones and -dithiones
  J. Org. Chem. 50, 3431 1985
• E. Schaumann, S. Fittkau
  Chemistry of 2-Diphenylphosphoryl Ketene Thioacetals
  Bull. Soc. Chim. Belges 94, 463 1985
• E. Schaumann, G. Rühter
  Fragmentation of 1,3-Dithiolane-derived Sulfur Ylides. A Convenient Thioaldehyde Synthesis
  TetrahedronLett. 26, 5265 1985
• E. Schaumann, S. Scheiblich
  Generation of Thioketenes via Cycloreversion of 1,3-Dithiolane-Derived Sulfur Ylides
  TetrahedronLett. 26, 5269 1985
• S. Sharat, H. Nimmesgern, E. Schaumann, V. Ramamurthy
  Photochemical Behavior of Thioketenes in Solution: Reaction from _S2
  J. Org. Chem. 50, 4799 1985

Publications 1986

• E. Schaumann, H. Behr, G. Adiwidjaja
  1,3-Anionic Cycloaddition of 1,3-Diphenyl-2-azallyl Lithium to Thioketenes and Thioketene S-Oxides
  Heterocycles 24, 1237 1986
• E. Schaumann
  Reactive Double Bond Systems via (3+2) Cycloreversion of Heterocycles
  Bull. Soc. Chim. Belges 95, 995 1986
• E. Schaumann, C. Friese,C. Spanka
  Nucleophilic Addition of Lithiated Phenyl Trimethylsilylmethyl Sulfide to Activated Olefins. A Facile Synthesisof 2-(Functionally) Substituted Silylcyclopropanes
  Synthesis 1986, 1035

Publications 1987

• E. Schaumann
  A Novel Route to Thiocarbonyl Compounds
  "Perspectives in the Organic Chemistry of Sulfur" (B. Zwanenburg, A. J. H. Klunder, ed.), Elsevier, Amsterdam 1987, p. 251
• E. Schaumann, T. Marr, H. Nimmesgern, S. Sieveking
  Methyl Shifts in 1,4-Dipoles from Sulfonylisocyanates and Ketene O,N-acetals
  Chem. Ber. 120, 335 1987
• E. Schaumann, J. Dietz, E. Kausch, G. C. Schmerse
  Alkyl Shifts in 1,4-Dipoles from Tosyl Iso(thio)cyanate and Imido(thio)carbonates or Isoureas
  Chem. Ber. 120, 339 1987
• E. Schaumann, E. Kausch, K.-H. Klaska, R. Klaska, J. Eck
  Cycloaddition reactions of heterocumulenes, XXVIII: A 1,6-dipole stabilized by "no bond" resonance. Molecular structure and reaction behavior
  Chem. Ber. 120, 405 1987

Publications 1988

• E. Schaumann
  The Chemistry of Thioketenes
  Tetrahedron 44, 1827 1988
• E. Schaumann, M. Möller, G. Adiwidjaja
  Cycloaddition reactions of heterocumulenes, XXIX - The reaction of thioketenes with isocyanates
  Chem. Ber. 121, 689 1988
• E. Schaumann, M. Möller
  On the reaction behavior of 4-thioxo-2-azetidinones
  Chem. Ber. 121, 701 1988
• E. Schaumann, G. Rühter
  Thioketones and enthiolates by 1,3-anionic cycloreversion of dithiolane derivatives
  Chem. Ber. 121, 1159 1988
• E. Schaumann, S. Scheiblich, U. Wriede, G. Adiwidjaja
  Thioketene syntheses, VIII - Thioketenes by (3+2)-cycloreversion of 1,3-dithiolane derivatives
  Chem. Ber. 121, 1165 1988
• E. Schaumann, A. Kirschning
  Ring-Opening of Oxiranes by Silyl-Substituted Allyl Anions. A Regiochemical Chameleon
  TetrahedronLett. 29, 4281 1988
• I. Handke, E. Schaumann, R. Ketcham
  Reactions of Trimethylsilyl Isocyanate and Isothiocyanate with 3-Dialkylamino-2H-azirines. A Facile Synthesis of 1-Unsubstituted 4-(Dialkylamino)imidazolin-2-ones and 4-(Dialkylamino)imidazoline-2-thiones
  J. Org. Chem. 53, 5298 1988

Publications 1989

• E. Schaumann, C. Friese, G. Adiwidjaja
  (2+1) Cycloaddition of Chloro(phenylthio)carbene to Vinyl Silanes. A Facile Synthesis of Highly Functionalized Cyclopropanes
  Tetrahedron 45, 3163 1989
• E. Schaumann
  The Chemistry of the Thiocarbonyl Group
  in "The Chemistry of the Carbonyl Group", Suppl. A, Vol. 2 (S. Patai, ed.), p. 1269, Wiley-Interscience, Chichester, 1989
• E. Schaumann, B. Mergardt
  Synthesis of S-Alkyl Thiocarboxylates from Vinylsilanes and Chlorothiocarbonates
  J. Chem. Soc., Perkin Trans. 1 1989, 1361
• M. Sh. El-Sharief, R. Ketcham, E. Schaumann
  The Reactions of Diphenyl- and Phenyldiazomethanes with Iminothiones
  Phosphorus, Sulfur, and Silicon 46, 83 1989
• E. Schaumann, C. Friese
  Cyclopropanes from Silyl/Sulfur-stabilized Carbanions and Oxiranes - the Interplay of two Reaction Pathways
  TetrahedronLett. 30, 7033 1989

Publications 1990

• E. Schaumann, B. Mergardt, S. Fittkau
  Synthesis of α,β-Unsaturated Thiocarboxylic Acid S-Esters via Wittig-Horner Olefination
  Synthesis 1990, 47
• E. Schaumann, O. Bolte, H. Behr
  S-Vinyl Thiooximes from Thioketenes and Benzylnitrene
  J.Chem. Soc., Perkin Trans. 1, 1990, 182
• E. Schaumann, A. Kirschning
  Regiospecific Synthesis of 1-Silyl-substituted 1,4-Dienes
  J. Chem. Soc., Perkin Trans. 1, 1990, 419
• E. Schaumann, S. Winter-Extra, K. Kummert, S. Scheiblich
  One-Pot Synthesis of 4,5-Unsubstituted 2H-1,3-Dithioles and -2-Alkylidene-1,3-dithioles from 1,3-Dithiolane S-Oxides
  Synthesis 1990, 271.
• E. Schaumann, A. Kirschning
  Iodonium-Induced Cyclizations of 5-Silyl-4-alkenols
  J.Chem. Soc., Perkin Trans. 1, 1990, 1481
• E. Schaumann, S. Winter-Extra, G. Rühter
  Thioaldehydes and Thioketones from 1,3-Dithiolane S-Oxides
  J. Org. Chem., 1990, 55, 4200
• V. R. Denisov, M. L. Lupaeva, E. M. Alekseeva, E. Schaumann
  Synthesis and Conversions of _Co2(CO_)6-1-(1-Alkynyl)-6,6- dichlorobicyclo[3.1.0]hexanes and their 6-Oxo- and 6- Azaheteroatomic Analogues
  Zh.Org. Khim., 1990, 26, 299

Publications 1991

• E. Schaumann, A. Kirschning, F. Narjes
  Synthesis of Vinylcyclopropanes from Epoxides
  J. Org. Chem. 1991, 56, 717
• H.-J. Breternitz, E. Schaumann, G. Adiwidjaja
  Cyclization of Deprotonated 2-Phenyl-1-tosylaziridine. A Surprising Example of an Intramolecular Nucleophilic Aromatic Addition
  TetrahedronLett. 1991, 32, 1299
• G. Adiwidjaja, C. Kirsch, F. Pedersen, E. Schaumann, G. C. Schmerse, A. Senning
  Generation and Trapping of Dichlorothioketene
  Chem. Ber. 1991, 124, 1485
• A. Kirschning, F. Narjes, E. Schaumann
  Synthesis of rac-Norartemeseol
  Liebigs Ann. Chem. 1991, 933
• B. Mergardt, K. Weber, G. Adiwidjaja, E. Schaumann
  Tandem silyl migrations to α,β-bis-silylated enals and enones
  Angew. Chem. 1991, 103, 1679
• F. Narjes, E. Schaumann
  Synthesis of Ethynylcyclopropanes from Epoxides
  Synthesis 1991, 1168
• E. Schaumann
  Acylation-type Reactions: Formation of Thioamides and Thiolactams
  "Comprehensive Organic Synthesis" (B. M. Trost and I. Fleming, eds.), Vol. 6 (E. Winterfeldt, ed.), Pergamon, Oxford 1991

Publications 1993

• F. Narjes, O. Bolte, D. Icheln, W. A. König, E. Schaumann
  Synthesis of Vinylcyclopropanes by Intramolecular Epoxide Ring-Opening. Application for an Enantioselective Synthesis of Dictyopterene A
  J. Org.Org. Chem. 1993, 58, 626
• E. Schaumann, F. Narjes
  Sulfur as Supporting Element in Vinylcyclopropane Formation
  Phosphorus, Sulfur, and Silicon 1993, 74, 395
• E. Schaumann, S. Scheiblich
  Ketenes, monohetero-substituted ketenes, dihetero-substituted ketenes
  Houben-Weyl-Müller, Methoden der Organischen Chemie, vol. E 15, pp. 2353-2530, 2818-2881, 2933-2957, Thieme, Stuttgart 1993
• F. Narjes, E. Schaumann
  Synthesis of (+)-Artemeseole
  Liebigs Ann. Chem. 1993, 841
• H. U. Kibbel, H. Blödorn, R. Ketcham, E. Schaumann
  Studies on 4-Thiazolidine-4,5-dithiones. Synthesis of 5- Hydrazonothiazolidine-4-thiones and 5-Unsubstituted Thiazolidine-4-thiones
  Chem. Ber. 1993, 126, 2079
• G. Adiwidjaja, O. Bolte, B. Dietz, E. Schaumann
  Dicyanomethylene Thiiranes From Thioketens and Tetracyanoethylene Oxides
  J.Chem. Soc., Perkin Trans. 1 1993, 2385

Publications 1994

• M.-R. Fischer, A. Kirschning, T. Michel, E. Schaumann
  Cyclopentanols by a silicon induced reaction cascade
  Angew. Chem. 1994, 106, 220, Angew. Chem. Int. ed. Engl. 33, 217, 1994
• R. Tiedemann, F. Narjes, E. Schaumann
  3-Methoxy-1-phenylthio-1-propene as d1/d3 Synthon: Application for an Asymmetric Synthesis of (S)-(+)-Parasorbic Acid
  Synlett 1994, 594
• E. Schaumann, F. Narjes, R. Tiedemann
  Sulfur-Functionalized Allyl Anions as Synthetic Building- blocks
  Phosphorus, Sulfur, and Silicon 1994,95-96, 347

Publications 1995

• G. Adiwidjaja, H. Flörke, A. Kirschning, E. Schaumann
  Electrophile-Induced Cyclizations of Silyl-Substituted 4-Alken-1-ols
  Liebigs Ann. 1995, 501
• I. Tornus, E. Schaumann, R. Mayer, G. Adiwidjaja
  Reactions of N-Sulfonylalkyl-amines with Ynamines - Formation of 2H-1,2-Thiazete 1,1-dioxides, Novel Thioketene S,S-dioxide Dimers, and Other S,N Heterocycles
  Liebigs Ann. 1995, 1795
• G. Adiwidjaja, H. Flörke, A. Kirschning, E. Schaumann
  Cyclizations of 5-Silyl-Substituted 4,5-Epoxy-1-alkanols: A Configuration-Dependent Mode of Ring Closure
  TetrahedronLett. 1995, 36, 8771

Publications 1996

• J. Nieschalk, C. Spanka, E. Schaumann
  3-Alkylidene-2-azetidinethiones: Useful Intermediates for the Synthesis of 3-Substituted 2-Azetidinethiones
  Liebigs Ann. 1996, 135
• J. Nieschalk, E. Schaumann
  Synthesis of Thione Analogs of Monobactams
  Liebigs Ann. 1996, 141
• H. Flörke, E. Schaumann
  Synthesis of (-)-Malyngolide
  Liebigs Ann. 1996, 147
• I. Tornus, E. Schaumann
  Novel Applications of N-Sulfonyl-alkylamines in [2+4] Cycloadditions
  Tetrahedron 1996, 52, 725
• H. Flörke, E. Schaumann
  O-Methyl-Lactols by Boron Trifluoride-Induced Cyclization of ε-Hydroxy-Substituted α,β-Epoxysilanes
  Synthesis 1996, 647
• E. Schaumann
  Novel Ring-opening Reactions of Epoxides
  in: Modern Problems of Organic Chemistry, Vol. 11 (A. A. Potekhin, R. R. Kostikov, Eds.), St. Petersburg 1996
• I. Tornus, E. Schaumann, G. Adiwidjaja
  Novel Reactions of N-Sulfonylamines with 3-Dimethylamino-2H-azirines. Competitive Formation of 1,2,5-Thiadiazoles, 1,2,3-Oxathiazoles and Acrylamidines. X-Ray Molecular Structure of N-(4-Dimethylamino-5-methyl-2-oxo-5-phenyl- 5H-1,2l6,3-oxathiazol-2-ylidene)benzamide
  J.Chem. Soc., Perkin Trans. 1 1996, 1629
• J.-K. Ergüden, E. Schaumann
  Phosphoryl Functionalized Bishomoallyl Alcohols by Ring Opening of Epoxides with Lithiated Allyldiphenylphosphane Oxides
  Synthesis 1996, 707
• M. Müller, W.-R. Förster, A. Holst, A. J. Kingma, E. Schaumann, G. Adiwidjaja
  Synthesis of 4-Silylcyclobut-2-enethiones and their Use in Cyclobutadiene Generation
  Chem. Eur. J. 1996, 949
• H. Behr, O. Bolte, G. Dräger, M. Ries, E. Schaumann
  [2+1] Cycloaddition Reaction of Dialkylthioketenes with Carbenes - Isomerization of the Resulting Alkylidenethiiranes
  Liebigs Ann. 1996, 1295
• T. Michel, A. Kirschning, C. Beier, N. Bräuer, E. Schaumann, G. Adiwidjaja
  Synthesis of Functionalized Cyclopentanes, Cyclohexanes and Cycloheptanes by a Silicon-induced Domino Reaction
  Liebigs Ann. 1996, 1811
• H.-G. Schwarz, E. Schaumann
  Generation and trapping of 1,3-dithiane-2-ylidene substituted ethyl carbene. On the existence of 4,8-dithiaspiro[2.5]oct-1-ene
  J.Chem. Soc., Perkin Trans. 1 1996, 2773

Publications 1997

• M. Müller, M. J. Heileman, H. W. Moore, E. Schaumann, G. Adiwidjaja
  Highly Regioselective Monothionation of Squaric and Semisquaric Acid Derivatives
  Synthesis 1997, 50
• S. Schabbert, R. Tiedemann, E. Schaumann
  A Facile Asymmetric Synthesis of the Compactin Lactone Moiety
  Liebigs Ann./Recueil 1997, 879
• H.-G. Schwarz, S. Dreeßen, A. Tersakian, E. Schaumann
  Facile Preparation of Novel Nonracemic Oxy-Substituted Cyclopropanone S,S-Acetals by gamma-Cyclization of Glyceric Aldehyde Dithioacetal Derivatives and Studies on their Mechanisms
  Liebigs Ann./Recueil 1997, 1447
• E. Schaumann, J. Nieschalk, R. Isecke, C. Spanka, H. Mrotzek, W.-R. Förster
  The Quest for β-Thiolactam Antibiotics
  Phosphorus, Sulfur, and Silicon 1997, 120/121, 349
• W.-R. Förster, R. Isecke, C. Spanka, E. Schaumann
  Functionalized beta-Thiolactams via Lewis-Acid-Catalyzed Addition of Alkynyl Silyl Sulfides to Azomethines
  Synthesis 1997, 942
• C. Beier, E. Schaumann
  An Epoxide-Based Enantioselective Synthesis of the Antifungal Antibiotic (+)-Preussin
  Synthesis 1997, 1296

Publications 1998

• C. Beier, E. Schaumann, G. Adiwidjaja
  The First Asymmetric Synthesis of (1R,1'S)-1-[1'-Benzyl- oxycarbonyl-methylamino)-2'-phenylethyl]oxirane: a Promising Building Block for the Synthesis of Peptide Mimetics
  Synlett 1998, 41
• A. Nowak, O. Bolte, E. Schaumann
  Lewis Acid Supported Reactions of 1,3- Bis(silyl)allyl Compounds with Epoxides - Inter- and Intramolecular Versions
  TetrahedronLett. 1998, 529
• A. Nowak, E. Schaumann
  Synthesis of 1-Functionalized Silylcyclopropanes Via Cyclization of 3-Silyl-4-alkenols
  Synthesis 1998, 899
• S. Schabbert, E. Schaumann
  Palladium-catalyzed Cyclizations of Silyl-substituted Bis-homopropargylic Alcohols to 2,3-Dihydrofurans
  Eur. J. Org. Chem. 1998, 1873
• N. Bräuer, T. Michel, E. Schaumann
  Variation of the C1 Component in the Silicon-induced Domino Synthesis of Cyclopentanes
  Tetrahedron 1998, 54, 11481
• N. Bräuer, A. Kirschning, E. Schaumann
  A Silicon-mediated Synthesis of 3-D-manno-octulosonic Acid (KDO)
  Eur. J. Org. Chem. 1998, 2729

Publications 1999

• S. Schabbert, E. Schaumann
  One-pot Synthesis of Silyl-substituted Dihydro-2H-pyran-2-ols from 3-Phenyldimethylsilyl-1-diethylaminopropyne and Epoxides
  Tetrahedron1999, 55, 1271
• R. Tiedemann, M. J. Heileman, H. W. Moore, E. Schaumann
  Synthesis of Angularly-Fused Benzocyclobutenedione Monoketals: Useful Synthetic Intermediates to Angucyclines
  J. Org. Chem. 1999, 64, 2170
• N. Bräuer, S. Dreeßen, E. Schaumann
  Bisepoxides as Biselectrophiles in the Silicon-Induced Domino Synthesis of Highly Functionalized Carbocycles
  TetrahedronLett. 1999, 40, 2921
• P. Jankowski, E. Schaumann, J. Wicha, A. Zarecki, G. Adiwidjaja
  Facile Synthesis of enantiomerically pure tert-butyl-(methyl)phenylsilanes
  TetrahedronAsym. 1999, 10, 519
• H.-J. Breternitz, E. Schaumann
  Ring-Opening of N-Tosylaziridines by Heterosubstituted Allyl Anions. Application to the Synthesis of Azetidines and Pyrrolidines
  J. Chem. Soc., Perkin Trans. 1 1999, 1927
• E. Schaumann, S. Dreeßen, S. Schabbert, R. Tiedemann
  Sulfur-Mediated Anti-Markovnikov Cyclizations of 4-Alkenols
  Phosphorus, Sulfur, and Silicon 1999, 153/154, 339

Publications 2000

• A. Jung, O. Koch, M. Ries, E. Schaumann
  A Silicon-Mediated Domino Approach to Pyrrolidine- and Piperidine-2,3-diones
  Synlett 2000, 92.
• P. Jankowski, E. Schaumann, J. Wicha, A. Zarecki, G. Adiwidjaja, M.Asztemborska
  Preparation of optically active n-butyl(methyl)(phenyl)-, tert-butyl(methyl)(phenyl)-, and isopropyl(methyl)(phenyl)silanes from the corresponding silyl chlorides using 2,2'-dihydroxy-1,1'-binaphthyls as resolving agents
  Chem. Comm. (Cambridge) 2000, 1029.

Publications 2001

• S. Dreeßen, S. Schabbert, E. Schaumann
  Synthesis of Hepialones and Related Dihydro-g-pyrones by Various (3+3) Methods
  Eur. J. Org. Chem. 2001, 245
• G. Harms, E. Schaumann, G. Adiwidjaja
  1,2-epimino-3,4-epoxybutane - a Versatile Chiral Building Block
  Synthesis 2001, 577.
• W. Regenhardt, E. Schaumann, H. W. Moore
  Cyclobutenone Ethylenedithioacetals and Their Ready Electrocyclic Ring Opening
  Synthesis 2001, 1076
• R. Ketcham, E. Schaumann, G. Adiwidjaja
  The Reaction of Cyanothioformamide with Isocyanates. Formation of a Disulfide by Reduction of a Thiocarbonyl Group
  Eur. J. Org. Chem. 2001, 1695

Publication 2002

• E. Schaumann, F. Tries
  A New General Route to Acceptor-Substituted Vinyloxiranes via Siloxy-Oxiranes - Novel Promising Synthetic Building-Blocks
  Synthesis 2002 191

Publication 2003

• E. Schaumann, F. Tries
  Synthesis of 1,3-Difunctionalized Cyclopentenes and 1,3,5-Trifunctionalized Cyclohexanes by Silicon-Induced Domino Reactions
  Eur. J. Org. Chem. 2003, 1085-1090

Publication 2005

• E. Schaumann, K. Benda
  (Benzo)Cyclobutenone Ethylenedithioacetals as Precursors for Highly Substituted Naphthalenes and Cyclopentenones
  Phosphorus, Sulfur, and Silicon 2005, 180, 1463

Publication 2006

• E. Schaumann, T. Bongardt, S. Dreeßen, R. Tiedemann
  Anti-Markovnikov addition to alkenes with a neighboring thioacetal function
  Tetrahedron Lett. 2006, 47, 4549

Publications 2007

• E. Schaumann, J. Voss
  Professor Wolfgang Walter in Memoriam
  J. Sulfur Chem. 2007, 28, 5
• E. Schaumann, A. Kirschning
  Domino Synthesis of Carbo- and Heterocycles Involving a 1,3 or 1,4 C-O Silyl Shift
  Synlett 2007, 177
• E. Schaumann
  Sulfur is More Than the Fat Brother of Oxygen. An Overview of Organosulfur Chemistry in Current Chemistry in Topics of Current Chemistry Vol. 274, "Sulfur-Mediated Rearrangements I", (E. Schaumann, ed.), Springer Berlin, Heidelberg, New York 2007
• A. Kirschning, C. Kujat, S. Luiken, E. Schaumann
  Small and Versatile-Formyl Anion and Dianion Equivalents
  Eur. J. Org. Chem. 2007, 2387
• E. Schaumann
  Silyl Thioacetals: Versatile Building Blocks for Organic Synthesis
  HeteroatomChemistry 2007, 18, 600

Publications 2008

• E. Schaumann, T. Puschke, J. Lange
  1,2- versus 1,3-Silyl migration in the reaction of acylsilanes with silyl-substituted carbanions
  TetrahedronLett. 2008, 49, 2628

Publications 2009

• E. Schaumann
  "Tosyl Isocyanate" First update in e-EROS-Electronic Encyclopedia of Reagents for Organic Synthesis; A. B. Charette, D. Crich, P. L. Fuchs, G. A. Molander, Eds., Wiley, New York, 2009
• E. Schaumann, W. Regenhardt, K. Benda, G. Adiwidjaja
  2-Hydroxybenzocyclobutenone Ethylene Dithioacetals as Precursors of Highly Substituted 1,4-Dihydronaphthalenes
  Eur. J. Org. Chem. 2009, 1016-1021
• E. Schaumann, G. Harms, F. Genrich, M. Gjikaj, G. Adiwidjaja
  Functionalized Esters as Bis-Electrophiles in a Silicon-Induced Domino Synthesis of Annulated Carbocycles
  Tetrahedron 2009, 65, 5577-5587
• J. Lange, E. Schaumann
  Configuration - Dependent Ring Opening of Silyloxiranes. Synthesis of Functionalized Alkenes or of Tetrahydrofurans.
  Eur. J. Org. Chem. 2009, 4674-4684
• F. Genrich, E. Schaumann
  Silicon- and sulfur-mediated synthesis of benzoannulated cyclooctanols
  TetrahedronLett. 2009, 50, 6187-6190
• T. Wagner, J. Lange, D. Grote, W. Sander, E. Schaumann, G. Adiwidjaja, A. Adam, J. Kopf
  Organylthio(silyl)carbenes
  Eur. J. Org. Chem. 2009, 5198-5207

Publications 2010

• Ahmed M. Sh. El-Sharief, Roger Ketcham, Monika Ries, Ernst Schaumann, Gunadi Adiwidjaja
  Imidazoline-4-thiones from Cyanothioformamides and Aldehyde Imines: Formation, Aromatization and Acetylation
  J.Heterocycl. Chem. 2010, 47, 425-429
• Gerrit Oppermann, Michael Stranberg, Harold W. Moore, Ernst Schaumann, Gunadi Adiwidjaja
  4-Iminocyclobutenones. Synthesis and Building-Blocks of Aminohydroquinones and Annulated Quinolines
  Synthesis 2010, 2027.
  
• E. Schaumann, G. Oppermann, M. Stranberg, H. W. Moore
  New Syntheses and Ring Expansion Reactions of Cyclobutenimines
  Aust. J. Chem. 2010, 63, 1656.
  

Publications 2011

• K. Benda, T. Knoth, R. L. Danheiser, E. Schaumann
  A New Route to Silyl-substituted Cyclobutenones and Silylketenes
  TetrahedronLett. 2011, 52, 46.
• K. Banert, M. Ries. E. Schaumann
  The Reaction of Cyclopropanols with Burgess Reagent. A Reinvestigation and Correction
  Phosphorus, Sulfur, Silicon 2011, 186, 205.
  

Publications 2012

• H. Nimmesgern, E. Schaumann, G. Adiwidjaja
  Reactivity of N-Alkylthiiranimines towards simple Nucleophiles and Iso(thio)cyanates
  Heterocycles 2012, 84, 945.
  
• Jörg Christoph Schmidt, Gunadi Adiwidjaja, Ernst Schaumann
  Unexpected Cyclization Reaction of tert-Butyl o-Trimethylsilylphenyl Sulfoximine
  Arkivoc 2012 (III), 104.
  

Publications 2013

• Yvonne Brussaard, Falk Olbrich, Ernst Schaumann
  Synthesis and Structural Characterization of Molybenum(VI) and Iron (II) Coordination Compounds with S-Alkyl-N-methyl-S-(2-pyridyl)sulfoximines and Catalytical Epoxidation Activity of the Molybdenum Complexes
  Inorg. Chem. , 2013, 52,13160.
  

Publications 2014

• E. Schaumann
  Acylation-type Reactions: Formation of Thioamides and Thiolactams"Comprehensive Organic Synthesis, 2nd Edition", (P. Knochel and G.A. Molander), Vol. 6 (S.D. Burke, ed.), Elsevier, Oxford, 2014, 411.
  
• Cathrin Scherner, Jens-Kerim Ergüden, Gunadi Adiwidjaja, Ernst Schaumann
  A Novel Route to 6-Substituted Piperidin-3-ols via Domino Cyclization of 2-Hydroxy-6-phosphinyl-5-hexenyl Tosylates with Primary Amines: Synthesis of (±)-Pseudoconhydrine and (±)-epi-Pseudoconhydrine, Synthesis, 2014, 46, 2506.
  
• Carsten Spanka, Ernst Schaumann
  Alkynyl Silyl Sulfides as Versatile Thioketene Equivalents, Synlett, 2014, 25, 2415
  
• Andreas Lender, Ingo Tornus, Eike Hübner, Ernst Schaumann
  Synthesis and Cyclization Reactions of Axially Chiral N-Sulfamoyl-acrylamidines, Heteroatom Chem., 2014, 25, 619.
  

Publications 2015

• Andreas Lender, Nigel P. C. Walker, Ernst Schaumann
  [2:1] and [2:2] cycloadducts from N-sulfonylamines and azomethines,
  TetrahedronLett., 2015, 56, 4800.

Publications 2016

• Ernst Schaumann,
  "Johannes Thiele"
  Neue Deutsche Biographie, Vol. 26, Duncker & Humblot, Berlin, 2016, 114-115

Publications 2020

• Alois Fürstner, Henning Hopf, Ernst Schaumann and Fiona Shortt de Hernandez Twenty years of Science of SynthesisNachr.Chem. 2020 Nov., 68, 24-26