Aerobic Radical-Cascade Alkylation/Cyclization of α,β-Unsaturated Amides: an Efficient Approach to Quaternary Oxindoles
作者:Promita Biswas、Subhasis Paul、Joyram Guin
DOI:10.1002/anie.201603809
日期:2016.6.27
An efficient method for the aerobic radical‐cascade alkylation/cyclization of α,β‐unsaturated amides to afford functionalized oxindoles with a C3 quaternary stereocenter is described. The process is based on the generation of valuable alkyl radicalsthrough sustainable aerobic C−H activation of aldehydes followed by decarbonylation using O2 as the sole oxidant. This method features a broad substrate