Enantioselective Fluorination of 2-Oxindoles by Structure-Micro-Tuned<i>N</i>-Fluorobenzenesulfonamides
作者:Fajie Wang、Juli Li、Qingyang Hu、Xianjin Yang、Xin-Yan Wu、Haoming He
DOI:10.1002/ejoc.201402072
日期:2014.6
attempts to fine-tune the reactivity and selectivity of N-fluorobenzenesulfonamide in fluorination reactions by changing the substituents on its phenyl rings. A series of N-fluorobenzenesulfonamides bearing substituents at the ortho, meta, and para positions were prepared, and were used in the enantioselectivefluorination of 2-oxindoles catalysed by chiral palladium complexes. Fluorinating reagents 1b