Facile synthesis of arylboronic esters by palladacycle-catalyzed bromination of 2-arylbenzoxazoles and subsequent borylation of the brominated products
作者:Yuting Leng、Fan Yang、Weiguo Zhu、Dapeng Zou、Yangjie Wu、Ranran Cai
DOI:10.1016/j.tet.2011.06.057
日期:2011.8
efficient and facile synthesis of arylboronic esters bearing the benzoxazole moiety has been described using a new family of palladacycle: cyclopalladatedferrocenylimines as the catalysts. This reaction includes two concessive steps: bromination of 2-arylbenzoxazoles and subsequent borylation. The bromination of para-C–H bond was an electrophilic substitution process by using NBS as the brominating reagent