Nickel-Catalyzed Domino Heck Cyclization/Suzuki Coupling for the Synthesis of 3,3-Disubstituted Oxindoles
作者:Yuxiu Li、Kuai Wang、Yuanyuan Ping、Yifan Wang、Wangqing Kong
DOI:10.1021/acs.orglett.7b03713
日期:2018.2.16
The first nickel-catalyzed domino Heck cyclization/Suzuki coupling reaction for the synthesis of 3,3-disubstituted oxindoles bearing quaternary all-carbon centers is reported. A wide range of electrophiles, such as aryl iodides, bromides, triflates, and chlorides, are all compatible with the reaction conditions. Moreover, cheap aryl esters, which undergo catalytic C–O bond cleavage, could also be employed
报道了第一个镍催化的多米诺Heck环化/ Suzuki偶联反应,用于合成带有季全碳中心的3,3-二取代的羟吲哚。各种各样的亲电试剂,例如芳基碘化物,溴化物,三氟甲磺酸盐和氯化物,都与反应条件兼容。此外,廉价的芳基酯经过催化的C-O键裂解,也可以用作亲电子试剂。该方法显示出良好的产率和广泛的范围,补充了常规钯基类似物的更实用和可持续的替代方法。