A Catalytic Borylation/Dehalogenation Route to <i>o</i>-Fluoro Arylboronates
作者:Chathurika R. K. Jayasundara、Jason M. Unold、Jossian Oppenheimer、Milton R. Smith、Robert E. Maleczka
DOI:10.1021/ol5028738
日期:2014.12.5
A two-step Ir-catalyzed borylation/Pd-catalyzed dehalogenation sequence allows for the net synthesis of fluoroarenes where the boronic ester is ortho to fluorine. Key elements of this approach include the use of a halogen para to the fluorine to block meta Ir-catalyzed borylation and the chemoselective Pd-catalyzed dehalogenation by KF activated polymethylhydrosiloxane (PMHS).