Copper-catalyzed decarboxylative coupling between α-oxocarboxylic acids and diphenyl disulfides or thiophenols is presented, which provided an effective and direct approach for the preparation of useful thioesters through C(sp2)–S bond formation.
Decarbonylative thioetherification by nickel catalysis using air- and moisture-stable nickel precatalysts
作者:Chengwei Liu、Michal Szostak
DOI:10.1039/c8cc00271a
日期:——
by C–S cleavage is reported. These reactions are promoted by a commercially-available, user-friendly, inexpensive, air- and moisture-stable nickel precatalyst. The process occurs with broad functional group tolerance, including free anilines, cyanides, ketones, halides and aryl esters, to efficiently generate thioethers using ubiquitous carboxylic acids as ultimate cross-coupling precursors (cf. conventional
Transition metal-catalyzed cross-electrophilecoupling of two electrophiles has proved to be a powerful and step-economic strategy for the construction of C–Cbonds in organic synthesis. Despite the considerable advances, cross-electrophilecoupling of sp-hybridized carboxylic acid derivatives via a decarbonylative fashion remains a formidable challenge. Herein, we disclose a chemoselective C(sp)–C(sp)