Electrochemical Selective Oxidative Synthesis of Diversified Sulfur Heterocycles from
<scp>β‐Ketothioamides</scp>
作者:Li‐Rong Wen、Ning‐Ning Wang、Wu‐Bo Du、Ming‐Zhe Zhu、Chao Pan、Lin‐Bao Zhang、Ming Li
DOI:10.1002/cjoc.202100132
日期:2021.7
diversified sulfur heterocycles has been described through organic electrosynthesis means. In undivided cell, dihydrothiophenes, thiazolines and 1,4-dithiines could be easily generated from various available β-ketothioamides under metal-free and external oxidant-free conditions. The transformation underwent smoothly under mild conditions and could be easily scaled-up. Moreover, different sulfur heterocycles
通过有机电合成方法描述了构建多样化硫杂环的通用实用方案。在未分裂的细胞中,在无金属和无外部氧化剂的条件下,可以从各种可用的 β-酮硫酰胺中轻松生成二氢噻吩、噻唑啉和 1,4-二硫嘌呤。转型在温和的条件下顺利进行,并且很容易扩大规模。此外,通过不同的溶剂产生不同的硫杂环,1,4-二氮杂双环[2.2.2]辛烷(DABCO)可以实现这种转化的氢原子转移(HAT)过程。