ChemInform Abstract: Substituent Effects in the Photochemistry of 5-Aryl-3,3-diphenyl-2(3H)-furanones. Steady-State and Laser Flash Photolysis Studies.

ChemInform Abstract

Irradiation of the aryldiphenylfuranones (I) in benzene results in decarbonylation, forming the aryldiphenylpropenones (II). When the photolysis is sensitized, a mixture of the insolulable dimers (III), regioisomers (IV), and arylphenanthrofuranones (V) is produced. Methanol (VI) reacts with (Ia) and (Id) upon irradiation, yielding the adducts (VII). Further examples are given in the original paper. (Mechanism, intermediates, absorption and fluorescence spectra).