Utility of zeolitic medium in photo-Fries and photo-Claisen rearrangements

Control of chemical reactions through the medium has been an age-old techni que. While the earlier approaches have relied on the bulk properties of the solvent such as polarity, viscosity etc., current studies have focussed on the use of microenvironmental features of the medium. A large number of me dia have been explored in this context. In this study zeolites have been ex plored as media for photoreactions. Photo-Fries and photo-Claisen rearrangm ents have been used as examples to illustrate the utility of zeolites as me dia for photoreactions.