Photochemical Reaction of 3,4-DiphenyIsydnone

Abstract

Abstract In a recent communication, we proposed 1H-1,3-diphenyldiazirine for the photolysis product of 3,4-diphenylsydnone. However, it was found later that the product was identical with the already known 2,4,5-triphenyl-1,2,3-triazole. In this paper, details of the photolysis of 3,4-diphenylsydnone and identification of the product are described. The formation of triazole derivative by the photolysis of 3,4-diphenylsydnone seems to be interesting. The reaction mechanisms are discussed.