Interaction of thermal acylacetylenes with thiosemicarbazide and 4-methyl- and 4-phenylthiosemicarbazides
摘要:
By the reaction of thiosemicarbazide and 4-methyl- and 4-phenylthiosemicarbazides with terminal alpha-acetylenic ketones, depending on the conditions, thiosemicarbazones of acylacetic aldehyde, 1,1-bis(acylvinyl)thiosemicarbazides, and 5-phenylamino-2-acylmethyl-3-acylvinyl-1,3,4-thiadiazolines are obtained. Ring-chain tautomerism of the 1,1-bis(acylvinyl)thiosemicarbazides has been investigated.