The first general methodology for the directthiolation of electron‐rich heteroarenes was developed by employing Pd/Al2O3, a recoverable and commercially available heterogeneous catalyst, and CuCl2. This method represents an operationally simple approach for the synthesis of these valuable compounds. Preliminary mechanistic studies indicate a heterogeneous catalytic system, in which both metals play
通过使用Pd / Al 2 O 3(一种可回收和可商购的非均相催化剂)和CuCl 2开发了第一种富电子杂芳烃直接硫醇化的通用方法。该方法代表了用于合成这些有价值的化合物的操作简单的方法。初步的机理研究表明,多相催化体系中的两种金属在硫醇化产物的形成中起着互补的作用。
Nickel-Catalyzed C−S Bond Formation via Decarbonylative Thioetherification of Esters, Amides and Intramolecular Recombination Fragment Coupling of Thioesters
A nickelcatalyzed cross‐coupling protocol for the straightforward C−Sbond formation has been developed. Various mercaptans and a wide range of ester and amide substrates bearing various substituents were tolerated in this process which afforded products in good to excellent yields. Furthermore, an intramolecular protocol for the synthesis of thioethers starting from thioesters has been developed
Various diarylsulfides, including heteroaryl- and nitrogen-containing sulfides, have been efficiently prepared by rhodium-catalyzed odorless deborylative arylthiolation of organoborons with S-aryl thiosulfonates. The ready availability of starting materials and further transformation of sulfides have rendered a diverse range of organosulfur compounds easily accessible.
Synthesis of 2-selenyl(sulfenyl)benzofurans via Cu-catalyzed tandem reactions of 2-(gem-dibromovinyl)phenols with diorganyl diselenides(disulfides)
作者:Jie Liu、Wei Chen、Lei Wang
DOI:10.1039/c3ra23361h
日期:——
An efficient synthesis of 2-selenyl(sulfenyl)benzofurans has been accomplished through a copper(I)-catalyzed tandem reaction of 2-(gem-dibromovinyl)phenols with diorganyl diselenides and disulfides in the presence of CuI/Mg/t-BuOLi in DMSO. Using this protocol, a variety of 2-selenyl(sulfenyl)benzofuran derivatives were obtained in good yields.
A nickel-catalyzed decarbonylative thioetherification of carboxylic acids with thiols was developed. Under the reaction conditions, benzoic acids, cinnamic acids, and benzyl carboxylic acids coupled with various thiols including both aromatic and aliphatic ones produce the corresponding thioethers in up to 99% yields. Moreover, this reaction was applicable to the modification of bioactive molecules