Continuous-Flow Synthesis of Biaryls by Negishi Cross-Coupling of Fluoro- and Trifluoromethyl-Substituted (Hetero)arenes
作者:Stefan Roesner、Stephen L. Buchwald
DOI:10.1002/anie.201605584
日期:2016.8.22
continuous‐flow method for the regioselective arylation of fluoroarenes and fluoropyridines has been developed. The telescoped procedure reported here consists of a three‐step metalation, zincation, and Negishi cross‐coupling sequence, providing efficient access to a variety of functionalized 2‐fluorobiaryl products. Precise temperature control of the metalation step, made possible by continuous‐flow technology
已经开发出一种连续流方法,用于氟代芳烃和氟吡啶的区域选择性芳基化。此处报道的伸缩程序包括三个步骤的金属化,镀锌和Negishi交叉耦合序列,可有效访问各种功能化的2-氟联芳基产品。连续流技术可以实现对金属化步骤的精确温度控制,从而可以高产率,短停留时间高效制备芳基化产物。另外,还提供了苯并三氟化物衍生物的区域选择性芳基化的几个实例。