Simultaneous irradiation of ultrasound and UV light. Ultrasonic acceleration of the photochemical disappearance of 4,4′-dihalogenated benzils in 1,4-dioxane

摘要

Irradiation of ultrasound accelerated the rate of the photochemical disappearance of 4,4′-dihalogenated benzils in 1,4-dioxane in the order of halogen=I, Br>Cl>F. 4,4′-dimethoxy and unsubstituted benzils did not show acceleration. Possible mechanisms of the acceleration are discussed.