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Synthesen von Siebenerringsystemen aus substituierten Isothiocyanaten und Hydrazinen |
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| Authors: | Prof. Dr. Richard Neidlein Wolf-Dieter Ober |
| Affiliation: | (1) Pharmazeutisch-Chemisches Institut, Universität (TH) Karlsruhe, Bundesrepublik Deutschland;(2) Pharmazeutisch-Chemisches Institut, Universität Heidelberg, Postfach 105760, D-6900 Heidelberg, Bundesrepublik Deutschland |
| Abstract: | The  -isothiocyanato-ketone 1 reacts with substituted hydrazines (2) in alkaline solution to form 2-alkyl-5,6-dihydro-(2H)-1,2,4-triazepine-3(4H)-thiones (3); the intermediate thiosemicarbazide derivatives (6), formed by addition of the hydrazine derivatives to the isothiocyanate group, could be isolated. CH3I and BrCH2COOC2H5 alkylate3 at sulfur, and the fusedring compounds14 and16 were isolated.Herrn Prof. Dr. Dr. h. c.K. E. Schulte zum 65. Geburtstag gewidmet. Dissertation 1976, Universität Heidelberg. R. Neidlein undW. D. Ober, Mh. Chem.107, 1241 (1976). |
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