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
Base-Mediated Intermolecular sp<sup>2</sup> C−H Bond Arylation via Benzyne Intermediates
作者:Thanh Truong、Olafs Daugulis
DOI:10.1021/ja200184b
日期:2011.3.30
A transition-metal-free method for arylation of heterocycle and arene carbon-hydrogen bonds by aryl chlorides and fluorides has been developed. The reactions proceed via aryne intermediates and are highly regioselective with respect to the C-H bond coupling component.