The mechanism of homolytic triphenylmethylation of aromatic substrates has been studied by the reaction between diacyl peroxide and triphenylmethyl free radical in toluene, anisole and chlorobenzene. A previously proposed mechanism, involving acyloxycyclohexadienyl radical as intermediate, has been further ascertained by comparing relative reactivities of aromatic substrate in triphenylmethylation
通过二酰基过氧化物与三苯基
甲基自由基在
甲苯,
苯甲醚和
氯苯中的反应,研究了芳香族底物的均三苯甲基化的机理。以前提出的机制,涉及acyloxycyclohexadienyl自由基作为中间,已进一步通过比较triphenylmethylation芳族底物的相对反应性和比率确定元到的总和邻位和对位取代的tetraphenylmethanes与benzoyloxylation,isopropoxycarbonyloxylation和羟基化底物的相对反应性而形成,并用的总和的比率邻位和对位到元 酰氧基化或羟基化产物。