Abstract

The thermal and thermocatalytic isomerisations of methyl 2,3,3-triphenylcyclopropene-1-carboxylate to methyl 2,3-diphenylindene-1-carboxylate have been studied. The rate constants of cyclopropene ring opening were determined and parameters of activation were calculated for the thermal process. The formation of cyclopropene and indene derivatives under the photochemical decomposition of methyl 3,3,5-triphenylpyrazolenine-4-carboxylate is discussed.

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