Photolysis of N-[(4-benzoyl)benzenesulfonyl]benzenesulfonamide

The photodecomposition of N-[(4-benzoyl)benzenesulfonyl]benzenesulfonamide (1) in an aqueous solution was investigated. The primary process of the irradiation of 1 in water involves two competitive modes of fragmentation of the excited 1. However, the resulting products indicate that the cleavage of S–N bond is not equivalent. The photodecomposition products consists of four main organic compounds and trace amounts of unidentified substances.