The Role of Aroyloxyl Radicals in the Formation of Solvent-derived Products in Photodecomposition of Diaroyl Peroxides. The Reactivity of Substituted Cyclohexadienyl Radicals and Intermediacy of ipso Intermediates
作者:Shigeru Takahara、Toshiyuki Urano、Akihide Kitamura、Hirochika Sakuragi、Osamu Kikuchi、Masayuki Yoshida、Katsumi Tokumaru
DOI:10.1246/bcsj.58.688
日期:1985.2
peroxide (TPO) in benzene and toluene afforded, among free-radical products, biphenyl and dimethylbiphenyls, respectively, which were solely derived from the aromatic solvents. The yields of biphenyls depended upon the rate with which the radical intermediates were generated from the peroxides in sufficiently high concentrations for their dimerization. Photolyses of TPO and dibenzoyl peroxide in 1,3
双(2-噻吩羰基)过氧化物(TPO)在苯和甲苯中的光解分别产生了自由基产物中的联苯和二甲基联苯,它们完全来自芳香族溶剂。联苯的产率取决于从足够高浓度的过氧化物生成自由基中间体以进行二聚的速率。TPO 和过氧化二苯甲酰在 1,3,5-三甲基苯中的光解也提供了溶剂衍生产物,2,3',4,5',6-五甲基二苯基甲烷。它的形成为在甲基取代的同碳原子上带有芳酰氧基的环己二烯基参与提供了明确的证据。