Reactivity of benzene and certain alkylbenzenes (toluene, p-xylene, mesitylene) during benzylation with benzylchloride and some derivatives (α-chloroethylbenzene, benzhydrylchloride, chloromethylmesitylene) has been determined under non-isomerizing conditions, in the temperature range− 10° and− 120°, in ethyl chloride solution with AlCl3 as a catalyst. Steric effects are found to play a major role in the reactivity when benzylchloride ...