Arynes are found to be facilely inserted into bis(pinacolato)diboron by using a platinum–isocyanide catalyst, affording diverse 1,2-diborylarenes, which can be converted into o-terphenyls via Suzuki–Miyaura coupling reaction.
Zinc‐Catalyzed Dual C–X and C–H Borylation of Aryl Halides
作者:Shubhankar Kumar Bose、Andrea Deißenberger、Antonius Eichhorn、Patrick G. Steel、Zhenyang Lin、Todd B. Marder
DOI:10.1002/anie.201505603
日期:2015.9.28
A zinc‐catalyzed combined CX and CH borylation of arylhalides using B2pin2 (pin=OCMe2CMe2O) to produce the corresponding 1,2‐diborylarenes under mild conditions was developed. Catalytic CH bond activation occurs ortho to the halide groups if such a site is available or meta to the halide if the ortho position is already substituted. This method thus represents a novel use of a group XII catalyst