Ligandless Nickel-Catalyzed <i>Ortho</i>-Selective Directed Trifluoromethylthiolation of Aryl Chlorides and Bromides Using AgSCF<sub>3</sub>
作者:Tin Nguyen、Weiling Chiu、Xinying Wang、Madeleine O. Sattler、Jennifer A. Love
DOI:10.1021/acs.orglett.6b02689
日期:2016.11.4
A mild protocol for Ni-catalyzed trifluoromethylthiolation of aryl chlorides and bromides is described herein. The method utilizes AgSCF3 as an easily accessible nucleophilic trifluoromethylthiolating reagent and does not require any ligands or additives. Ortho-selectivity is achieved using a variety of directing groups such as imines, pyridines, and oxazolines for 24 examples in up to 95% yield.
本文描述了Ni催化的芳基氯化物和溴化物的三氟甲基硫醇化的温和方案。该方法利用AgSCF 3作为容易获得的亲核三氟甲基硫醇化试剂,不需要任何配体或添加剂。对于24个实例,使用多种指导基团如亚胺,吡啶和恶唑啉实现邻位选择性,产率高达95%。