Iodine-Catalyzed Direct Olefination of 2-Oxindoles and Alkenes via Cross-Dehydrogenative Coupling (CDC) in Air
作者:Hong-Yan Huang、Hong-Ru Wu、Feng Wei、Dong Wang、Li Liu
DOI:10.1021/acs.orglett.5b01662
日期:2015.8.7
A direct intermolecular olefination of sp3 C–H bond between 2-oxindoles and simple alkenes via a Cross-Dehydrogenative Coupling (CDC) strategy has been developed. In the absence of additional base, moderate to excellent yields have been obtained by using a catalytic amount of iodine with atmospheric oxygen as the reoxidant. Based on the observation of a radical capture experiment, the transformation