Ring-chain tautomerism of substituted hydrazones. 16. Arylidene derivatives of vicinal hydrazino thiols

Article abstract of DOI:10.1007/BF00503654

Products of condensation of vicinal hydrazino thiols with aromatic carbonyl compounds, which were found to be mixtures of one acyclic tautomer (a hydrazone) and two stereoisomers with a cyclic form (perhydro-1,3,4-thiadiazine), were obtained. The tautomer