Imidazoline-4-thiones from cyanothioformamides and aldehyde imines: Formation, aromatization, and acetylation von El-Sharief, Ahmed M. Sh, Ketcham, Roger, Ries, Monika, Schaumann, Ernst, Adiwidjaja, Gunadi

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The Reaction of Cyanothioformamide with Isocyanates − Formation of a Disulfide by Reduction of a Thiocarbonyl Group von Ketcham, Roger, Schaumann, Ernst, Adiwidjaja, Gunadi

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Synthesis of tetrathiafulvalene doubly fused to the 3,4-position of selenophene von Ketcham, Roger, Hoernfeldt, Anna Britta, Gronowitz, Salo

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[2 + 2]-Cycloreversions von Schaumann, Ernst, Ketcham, Roger

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Heterocyclic Ring-Closure Reactions; VII1. A Facile Synthesis of 5-Imino-4-oxazolidinethiones and 4-Thioxo-5-oxazolidinones von Ketcham, Roger, Schaumann, Ernst, Niemer, Thomas

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The Preparation of cis-4-Nitro-4'-methoxystilbene via the Wittig Reaction von Ketcham, Roger, Jambotkar, D, Martinelli, Louis

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Thiazolothiazoles. II. Parent heterocycle and its carboxylic and amino derivatives von Johnson, John Raven, Rotenberg, Don H, Ketcham, Roger

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Reactions of trimethylsilyl isocyanate and isothiocyanate with 3-(dialkylamino)-2H-azirines. A facile synthesis of 1-unsubstituted 4-(dialkylamino)imidazolin-2-ones and 4-(dialkyla... von Handke, Isabel, Schaumann, Ernst, Ketcham, Roger

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Three-Membered Rings. II. Conjugative Properties and Electronic Spectra of Substituted Stilbene Oxides1 von Strait, L. A, Jambotkar, D, Ketcham, Roger, Hrenoff, Michael

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Heterocyclic ring-closure reactions. 8. Reactions of isothiocyanates with cyanothioformamides. Cyclization of 5-imino-4-thioxo-2-imidazolidones and 5-imino-2,4-imidazolidinedithion... von Khattak, Ismail, Ketcham, Roger, Schaumann, Ernst, Adiwidjaja, Gunadi

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Reactions of isothiocyanates with cyanothioformamides. Cyclization of 5-imino-4-thioxo-2-imidazolidones and 5-imino-2,4-imidazolidinedithiones to 5,7-dihydrodiimidazo[4,5-b:4',5'-e... von KHATTAK, I, KETCHAM, R, SCHAUMANN, E, ADIWIDJAJA, G

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ChemInform Abstract: Imidazoline-4-thiones from Cyanothioformamides and Aldehyde Imines: Formation, Aromatization, and Acetylation von El-Sharief, Ahmed M. Sh, Ketcham, Roger, Ries, Monika, Schaumann, Ernst, Adiwidjaja, Gunadi

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The amine catalyzed Perkin condensation: A class project von Ketcham, Roger

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Heterocyclic ring-closure reactions. 6. Preparation and further cyclization reactions of 5-imino-1,3-diphenyl-4-thioxo-2-imidazolidinone and 5-imino-1,3-diphenyl-2,4-imidazolidined... von Ketcham, Roger, Schaumann, Ernst

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[2+2]‐Cycloreversionen von Schaumann, Ernst, Ketcham, Roger

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Thiazolothiazoles. 3. Synthesis and biological evaluation of functionalized dialkyl derivatives from .gamma.,.gamma.,.gamma.',.gamma.'-tetramethylthiazolo[5,4-d]thiazole-2,5-dibuty... von Ketcham, Roger, Mah, Sonia

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Studies on thiazolidine-4,5-dithiones. Synthesis of 5-hydrazonothiazolidine-4-thiones and 5-unsubstituted thiazolidine-4-thiones von Kibbel, Hans Ulrich, Blödorn, Hartmut, Ketcham, Roger, Schaumann, Ernst

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Imidazoimidazoles. I. The Reaction of Ureas With Glyoxal. Tetrahydroimidazo[4,5-d]imidazole-2,5-diones1,2 von Nematollahi, Jay, Ketcham, Roger

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Imidazoimidazoles. I. The Reaction of Ureas With Glyoxal. Tetrahydroimidazo[4,5-d]imidazole-2,5-diones 1,2 von Nematollahi, Jay, Ketcham, Roger

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Heterocyclic Ring-Closure Reactions; VII 1 . A Facile Synthesis of 5-Imino-4-oxazolidinethiones and 4-Thioxo-5-oxazolidinones von Ketcham, Roger, Schaumann, Ernst, Niemer, Thomas

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