Polar effect in the reaction of photoenol-type diradical with molecular oxygen

…, H Nishimura, H Shimizu, T Matsuura

Index: Ito, Yoshikatsu; Nishimura, Hiroaki; Shimizu, Hiroshi; Matsuura, Teruo Journal of the Chemical Society, Chemical Communications, 1983 , # 19 p. 1110 - 1111

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Abstract

Measurement of product [(4) and (5)] quantum yields indicated that reactions of molecular oxygen with diradicals photogenerated from 2, 4, 6-tri-isopropylbenzophenones (3a–e) were accelerated by the presence of both electron-donating (OMe and Me) and electron- withdrawing (Cl and CF3) substituents, this acceleration probably resulted from the zwitterionic nature of the diradicals.