Intramolecular Hydrogen-Atom Transfer in 2-Alkylbenzoyloxyl Radicals as Studied by Transient Absorption Kinetics and Product Analyses on the Photodecomposition …

…, M Tsuchiya, K Tokumaru, H Sakuragi

Index: Wang, Jun; Tsuchiya, Masahiro; Tokumaru, Katsumi; Sakuragi, Hirochika Bulletin of the Chemical Society of Japan, 1995 , vol. 68, # 4 p. 1213 - 1219

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Citation Number: 11

Abstract

The pulsed-laser excitation of bis (2-methylbenzoyl) peroxide at 308 nm in acetonitrile afforded a broad absorption band at 500—800 nm due to 2-methylbenzoyloxyl radicals. The decay of this band accompanied the growth of another band at 350 nm due to 2- carboxybenzyl radicals produced by an intramolecular hydrogen-atom transfer from the neighboring 2-methyl group; the rate constant was 1.7× 10 7 s− 1 at 23° C, the activation ...