作者:V. R. Akhmetova、R. R. Khairullina、T. V. Tyumkina、Yu. V. Nelyubina、A. F. Smol’yakov、I. S. Bushmarinov、Z. A. Starikova、M. F. Abdullin、R. V. Kunakova
DOI:10.1007/s11172-010-0096-1
日期:2010.2
cyclothiomethylation of carboxylic acid hydrazides RCONHNH2 (R = C5H4N, Ph, 2-MeOC6H4, or 4-HOC6H4CH2) with formaldehyde and H2S at 70 °C affords predominantly the corresponding N-(1,3,5-dithiazinan-5-yl)amides, whereas this reaction at 0–−50 °C gives a mixture of the latter compounds with 3-acyl-1,3,4-thiadiazolidines. N-(1,3,5-Dithiazinan-5-yl)-amides were selectively synthesized by the reaction of carboxylic acid
羧酸酰肼 RCONHNH2(R = C5H4N、Ph、2-MeOC6H4 或 4-HOC6H4CH2)在 70°C 与甲醛和 H2S 的环硫甲基化主要提供相应的 N-(1,3,5-二噻嗪烷-5-基)酰胺,而该反应在 0–-50 °C 下产生后一种化合物与 3-酰基-1,3,4-噻二唑烷的混合物。N-(1,3,5-Dithiazinan-5-yl)-酰胺是通过羧酸酰肼与甲醛和 H2S 在 BuONa 和 BuOH 中的反应选择性合成的。