Carbanions of alkanesulfonyl halides and esters react with nonenolizable carbonyl compounds to give olefins. Mechanistic studies reveal that initial aldol-type addition of the carbanions is followed by cyclization–fragmentation to alkenes, and the leaving group on the sulfonyl moiety (RSO2X) controls carbanion stability and rate of the olefin formation.
Vicarious Nucleophilic Substitution of Hydrogen in Nitroarenes using 1-Chloroalkanesulfonic Esters; A Simple Synthesis of 1-(Nitrophenyl)-alkanesulfonic and (Nitrophenyl)-methanesulfonic Esters
作者:M. Mąkosza、J. Goliński
DOI:10.1055/s-1983-30611
日期:——
MAKOSZA, M.;GOLINSKI, J., SYNTHESIS, BRD, 1983, N 12, 1023-1025