Oxidative cyclisation of ketone thiosemicarbazones. Part I. 4-Methyl- and 4-aryl-thiosemicarbazones
作者:Justus K. Landquist
DOI:10.1039/j39700000063
日期:——
4-Substituted thiosemicarbazones of ketones undergo oxidative cyclisation, catalysed by chromatographic adsorbents, giving Δ1-[1,2,4] triazoline-5-thiones, and oxidation on manganese dioxide to 5-imino-Δ3-[1,3,4]- thiadiazolines. The triazolinethiones may be converted into triazolinones. The reactions are strongly influenced by steric factors.
4-取代酮缩氨基硫脲进行氧化环化,通过色谱吸附剂催化,使Δ 1 - [1,2,4]三唑-5-硫酮,并在二氧化锰氧化成5-亚氨基-Δ 3 - [1,3, 4]-噻二唑啉。三唑啉硫酮可转化为三唑啉酮。反应受空间因素的强烈影响。