Highly regioselective palladium-catalyzed direct cross-coupling of imidazo[1,2-a]pyridines with arylboronic acids
作者:Limin Zhao、Haiying Zhan、Jinqiang Liao、Jianping Huang、Qinlin Chen、Huifang Qiu、Hua Cao
DOI:10.1016/j.catcom.2014.06.028
日期:2014.11
A highly regioselective method for the palladium-catalyzed direct cross-coupling of imidazo[1,2-a]pyridines with arylboronic acids has been developed by using O-2 as oxidant. This process can be applied to a wide range of imidazo[1,2-a]pyridines and arylboronic acids with excellent C-3-regioselectivity. It provides a new way for developing C-C bond-forming processes of multisubstituted imidazo[1,2-a]pyridines, which are common structural motifs in natural products and pharmaceuticals. (C) 2014 Elsevier B.V. All rights reserved.
Pd-catalyzed oxidative cross-coupling of imidazo[1,2-a]pyridine with arenes
A facile method for direct Pd(OAc)2-catalyzed oxidative cross-coupling of unactivated imidazo[1,2-a]pyridine with simplearenes has been developed. The reaction shows good reaction efficiency, high regioselectivity, and good functional-group compatibility. This approach provides a useful protocol for the preparation of imidazo[1,2-a]pyridine–arene structure of interest in biological and pharmaceutical
已开发了一种简便的方法,用于未活化的咪唑并[1,2- a ]吡啶与简单的芳烃的直接Pd(OAc)2催化的氧化交叉偶联。该反应显示出良好的反应效率,高的区域选择性和良好的官能团相容性。该方法为生物和药物材料中感兴趣的咪唑并[1,2 - a ]吡啶-芳烃结构的制备提供了有用的方案。