Direct Competition of Intramolecular C–H Insertions into Benzylic C–H and 4-Substituted Benzylic C–H by Rhodium(II)-mediated Carbenoids

Abstract

Direct competitions of intramolecular C–H insertions into benzylic C–H and 4-nitro and 4-methoxy substituted benzylic C–H by rhodium(II)-mediated carbenoids were investigated, and the relative reactivities obtained by direct competition were comparable to those obtained by a previously reported indirect method.