trichloromethylarenes and thioacylhydrazines or acylhydrazines has been considered. In alcohols as solvents, alkyl arenecarboxylates form as a result of alcoholysis, while 2,5-disubstituted 1,3,4-thiadiazoles (1,3,4-oxadiazoles) form as minor products. In pyridine solutions, the major or sole products are those of reductive condensation,i.e., the correspondingN-substituted hydrazones of arenecarbaldehydes
已经考虑了溶剂对三
氯甲基
芳烃与
硫代酰基
肼或酰基
肼之间反应过程的影响。在作为溶剂的醇中,由于醇解而形成
芳烃羧酸烷基酯,而作为次要产物形成 2,5-二取代的 1,3,4-
噻二唑(1,3,4-恶二唑)。在
吡啶溶液中,主要或唯一的产物是还原缩合产物,即相应的
芳烃甲醛的 N-取代腙。当反应在
吡啶-链烷醇混合物中进行时,以良好的产率获得1,3,4-
噻二唑或1,3,4-恶二唑衍
生物。