Catalyst Selection Facilitates the Use of Heterocyclic Sulfinates as General Nucleophilic Coupling Partners in Palladium-Catalyzed Coupling Reactions
作者:Tim Markovic、Benjamin N. Rocke、David C. Blakemore、Vincent Mascitti、Michael C. Willis
DOI:10.1021/acs.orglett.7b02944
日期:2017.11.17
heterocycle-derived sulfinates are shown to be effective nucleophilic coupling partners with aryl chlorides and bromides using Pd(0) catalysis. The use of optimal reaction conditions, specifically incorporating a P(t-Bu)2Me-derived Pd catalyst, allowed reactions to be performed at moderate temperatures and enabled the inclusion of a variety of sensitive functional groups. Challenging heterocyclic sulfinates, including
一系列5元和6元杂环衍生的亚磺酸盐显示是使用Pd(0)催化与芳基氯化物和溴化物的有效亲核偶联伙伴。使用最佳反应条件,特别是掺入P(t - Bu)2 Me衍生的Pd催化剂,可以在中等温度下进行反应,并可以包含各种敏感的官能团。具有挑战性的杂环亚磺酸盐,包括吡嗪,哒嗪,嘧啶,吡唑和咪唑,均表现出良好的性能。