Reactions of α, N-Diarylnitrones with O-Methyl Diphenylphosphinothioate and Oxidations of N-Alkylidene-2-hydroxyanilines with Silver Oxide. Preparation of …

M Yoshifuji, R Nagase, N Inamoto

Index: Yoshifuji, Masaaki; Nagase, Rihei; Inamoto, Naoki Bulletin of the Chemical Society of Japan, 1982 , vol. 55, # 3 p. 873 - 876

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Citation Number: 21

Abstract

Reactions of α, N-diarylnitrones in the presence of O-methyl diphenylphosphinothioate at 150° C gave 2-arylbenzoxazoles (3) in fairly good yields. Oxidation of N-alkylidene-2- hydroxyanilines with silver oxide afforded 2-alkenyl-, 2-alkyl-, or 2-arylbenzoxazoles (7 and 3) in good yields under mild reaction conditions (at room temperature). A plausible mechanism for formation of 3 and 7 has been discussed briefly.