Photodegradation of fenarimol

Abstract

The photodegradation of aqueous alcoholic solutions of fenarimol at λ ≥ 250 nm has been examined. UV irradiation of an aqueous methanolic solution for 24 h yielded two photoproducts, identified as 2,4′-dichlorobenzil and p-chlorobenzoic acid, while irradiation of a solution in aqueous isopropanol yielded p-chlorobenzoic acid and two additional products identified as 2,4′-dichlorobenzophenone and o-chlorobenzoic acid. A mechanism for the formation of the photoproducts is suggested. © 2000 Society of Chemical Industry