The Synthesis and the Thermal Decomposition of 1, 3, 4-Dioxazole Derivatives

H Nohira, K Inoue, H Hattori, T Okawa…

Index: Nohira,H. et al. Bulletin of the Chemical Society of Japan, 1967 , vol. 40, # 3 p. 664 - 668

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Citation Number: 7

Abstract

2, 2, 5-Tri-substituted-1, 3, 4-dioxazoles have been prepared by the reactions of benzhydroxamic acids with the diethylketals of such ketones as acetone, cyclohexanone, acetophenone and benzophenone. These dioxazoles decompose at elevated temperatures (above 150° C) into phenylisocyanates and ketones. A kinetic study of the decomposition reaction in nitrobenzene has been attempted, and the first-order rate constants have been ...

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