Synthesis and transformations of 2-amino-1,3,4-thiadiazines

descriptionPublicationkeyboard_double_arrow_right Article 01 Apr 1991 English Publisher:Springer Science and Business Media LLCJournal:Chemistry of Heterocyclic Compounds, volume 27, pages 442-446 (issn: 0009-3122, eissn: 1573-8353,

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Authors: S. V. Usol'tseva; G. P. Andronnikova; S. L. Nikolaeva; A. T. Lebedev; V. A. Shevyrin;

doi: 10.1007/bf00480848

Synthesis and transformations of 2-amino-1,3,4-thiadiazines

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Abstract

Depending on the reaction conditions, 2-amino-1,3,4-thiadiazine and 2-hydrazinothiazole derivatives were obtained by cyclization of thiosemicarbazide with ethyl bromopyruvate in concentrated hydrochloric acid. The rearrangements of 5-carbonyl-substituted 2-amino-1,3,4-thiadiazines to thiazole derivatives in an acidic medium were studied.

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