NOVEL AND CONVENIENT METHODS FOR THE PREPARATION OF SUBSTITUTED THIOPHENES, THIAZOLES, AND 1,3,4-THIADIAZOLE-2(3<i>H</i>)-THIONES FROM BIFUNCTIONAL SUBSTRATES
作者:I. Thomsen、U. Pedersen、P. B. Rasmussen、B. Yde、T. P. Andersen、S.-O. Lawesson
DOI:10.1246/cl.1983.809
日期:1983.6.5
The reactions of LR (Lawesson’s Reagent) with 4-oxocarboxylic acid derivatives I, N-acyl aminoacid derivatives III, and N-acyl-N′-ethoxycarbonylhydrazines V, smoothly produce substituted thiophenes II, thiazoles IV, and 1,3,4-thiadiazole-2(3H)-thiones VI.
LR(Lawesson 试剂)与 4-氧代
羧酸衍
生物 I、N-酰基
氨基酸衍
生物 III 和 N-酰基-N'-乙氧基羰基
肼 V 的反应顺利产生取代的
噻吩 II、
噻唑 IV 和 1,3,4-
噻二唑-2(3H)-
硫酮 VI.