Steric acceleration in the reaction of aryl bromides with tributylstannyl radicals
Abstract
Approximate absolute rate constants for the abstraction of bromine from a series of aryl bromides by stannyl radicals have been determined: 2,4,6-tri-tert-butylbromobenzene and 2,4,6-triphenylbromobenzene are found to be unusually reactive, most likely owing to steric acceleration.