Transition metal-free synthesis of pinacol arylboronate: Regioselective boronation of 1,3-disubstituted benzenes
The regioselective synthesis of pinacol arylboronate has been achieved from 1,3-disubstituted benzene through directed ortho-metallation (DoM)-borylation sequence. A wide range of substituents and borylating reagents were investigated. In situ lithiation and subsequent boronation predominantly occurred at the ortho-position to afford the desired products in moderate yields. CSIRO 2014.