active: A silica‐supported “compact” phosphane, Silica‐SMAP, can be used in the Pd‐catalyzed borylation of aryl chlorides or bromides with bis(pinacolato)diboron (see scheme). The Silica‐SMAP/Pd system significantly expands the substrate scope of the borylation toward sterically and electronically challenging aryl halides.
固定但不活跃:
二氧化硅负载的“紧凑”膦Silica-S
MAP可用于Pd催化的芳基
氯化物或
溴化物与双(
频哪醇)二
硼化的
硼化反应(参见方案)。Silica-S
MAP / Pd系统极大地扩展了
硼化的底物范围,使其具有对空间和电子挑战性的芳基卤化物。