Metal-Free Route to Carboxylated 1,4-Disubstituted 1,2,3-Triazoles from Methoxycarbonyl-Modified Vinyl Sulfone
作者:Jayanta Das、Santu Dey、Tanmaya Pathak
DOI:10.1021/acs.joc.9b02443
日期:2019.12.6
A metal-free alternative to the regioselective synthesis of carboxylated 1,4-disubstituted 1,2,3-triazoles (1,4-cDTs) has been accomplished. A methoxycarbonyl-substituted vinyl sulfone on reactions with organic azides resulted in the formation of 1,4-cDTs in an operationally simple route. The reaction, carried out with a variety of organic azides containing free alcohol, acid, Boc-protected amine,
现已实现了无金属替代方案,可选择性取代羧基化的1,4-二取代1,2,3-三唑(1,4-cDTs)。与有机叠氮化物反应时,甲氧基羰基取代的乙烯基砜导致以操作简单的方式形成1,4-cDTs。发现该反应是使用多种有机叠氮化物进行的,这些有机叠氮化物具有普遍性质,该有机叠氮化物包含游离醇,酸,Boc保护的胺,酯,保护糖,长链烷烃,苄基,9-甲基蒽基和胆固醇基,提供了许多新的化学实体;叠氮化物的反应主要生成所需的产物和一些未预期的产物。本文首次报道了任何1,4-二取代1,2的有针对性的无金属合成,