Hindered Aryllithium Reagents as Partners in Palladium-Catalyzed Cross-Coupling: Synthesis of Tri- and Tetra-<i>ortho</i>-Substituted Biaryls under Ambient Conditions
作者:Massimo Giannerini、Valentín Hornillos、Carlos Vila、Martín Fañanás-Mastral、Ben L. Feringa
DOI:10.1002/anie.201306427
日期:2013.12.9
lithium reagent: Mono‐ and di‐ortho‐substituted aryllithiumreagents were coupled through palladium catalysis with hindered aryl bromides to form highly congested tri‐ and tetra‐ortho‐substituted biaryls. The reaction allows the use of easily accessible ortho‐functionalized aryllithium compounds. The high reactivity of organolithium reagents facilitates a fast process underambientconditions.