Bulletin of the Chemical Society of Japan · 1967 · 17 citations · 1 references
Natural SciencesChemistryOrganic ChemistryReaction EngineeringThermal AnalysisChemical ThermodynamicsHeterocycle SynthesisHeterocyclic ChemistryOrganic SynthesisKetonesNonisothermal Kinetic AnalysisOxazole ChemistryOxazole SynthesisRate ConstantsThermal DecompositionThermal Decomposition Reactions
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 obtained.
1