Anchimeric Assistance in Hydrogen-Atom Transfer to Bromine
作者:Anna K. Croft、Christopher J. Easton
DOI:10.1071/ch04058
日期:——
N-bromosuccinimide exhibit anchimeric assistance by neighbouring ester and amido groups. Rate enhancement occurs through electron donation to the electropositive carbon centre that develops in the transition state of the hydrogen-atom transfer to bromine. The extent of the effect depends on the electron demand at the benzylic position and the electron-donating ability of the neighbouring group.