Poly(3,4‐dimethyl‐5‐vinylthiazolium) was synthesized from 3,4‐dimethyl‐5‐vinylthiazole through free radical polymerization and was examined as polymer precatalysts in the presence of 1,8‐diazabicyclo[5.4.0]undec‐7‐ene (DBU) for the thioesterification of aldehydes with thiols. The poly(5‐vinylthiazolium)/DBU had excellent catalytic activity and could be reused 10 times without a considerable loss of
Based on systematic electrochemical analysis, an integrated synthetic platform of C(sp3)-based organoboron compounds was established for the introduction of heteroatoms. The electrochemically mediated bond-forming strategy was shown to be highly effective for the functionalization of sp3-hybridized carbon atoms with significant steric hindrance. Moreover, virtually all the nonmetallic heteroatoms could
Synthesis of thioesters using an electrochemical three-component reaction involving elemental sulfur
作者:Gongbo Liu、Shuoyu Xu、Yangyang Yue、Changhui Su、Wangze Song
DOI:10.1039/d4cc01910e
日期:——
three-component reaction involving elemental sulfur is disclosed for achieving a metal-free, oxidant-free synthesis of thioesters in a high atom-economical, step-economical and chemoselective manner. A mechanistic investigation indicates that the use of elemental sulfur to trap acyl radical derived fromradical umpolung of α-keto acid with an electrochemical design can efficiently generate a carbonyl