ETUDE DU MECANISME DE LA TRANSFORMATION PHOTOCHIMIQUE D'ALKYLARENESULFONAMIDO-2 CYCLOHEXENE-2 ONE EN ALKYLAMINO-2 ARYL-3 CYCLOHEXENE-2 ONE

Article abstract of DOI:10.1016/S0040-4020(01)97986-4

When excited in their triplet excited state 2-arenesulfonamido-2-cyclohexenones lead to a very efficient desulfonation reaction and to migration of the aryl substituent.A wavelength effect was observed on the desulfonation product from direct irradiations.Furthermore, at 254 nm, a concentration effect and a quantum yield higher than unity indicate that a radical chain component was involved.The mechanism of this reaction is discussed taking into account the intramolecular character of the aryl migration.