Chemoselective Suzuki-Miyaura Coupling of Bromophenyl-Substituted Bromoallenes with Arylboronic Acids
作者:Liang Xu、Wenfeng Jiang、Xin Du、Xuesong Liu、Ming Bao、Ren He
DOI:10.1055/s-0031-1290682
日期:2012.6
Developing highly chemoselective Suzuki-Miyaura coupling reactions is of great value in the synthetic chemistry. Here we report the results of palladium-catalyzed reaction of bromoallenes containing an aryl bromide moiety with arylboronic acids. It is found that the C-Br insertion exclusively takes place on bromoallene rather than on the benzene ring. Theoretical calculations demonstrate that the corresponding oxidative addition intermediate has a much lower free energy.