92549-02-5Relevant academic research and scientific papers
Norrish Type I and Type II Reactions of Ketones as Photochemical Probes of the Interior of Zeolites
Ramamurthy, V.,Corbin, D. R.,Eaton, D. F.
, p. 5269 - 5278 (2007/10/02)
The Norrish type I and type II reactions of alkylbenzoin ethers, alkyldeoxybenzoins and α-alkyldibenzyl ketones included within the microporous structures of zeolites X and Y have been investigated.Product distributions varied significantly from that observed in benzene.In addition, it differed between various alkali-metal cation-exchanged samples.These variations are interpreted to result from the restriction offered by the zeolite micropores on the motions of the adsorbed organic molecule.Although this study is restricted to ketones, the knowledge gained is expected to be of general value.
Surface photochemistry: the photolysis of α-methoxy acetophenones on silica gel
Mayo, Paul de,Ramnath, N.
, p. 1293 - 1296 (2007/10/02)
The photolysis of α-methoxy acetophenones 1a-1e adsorbed on silica gel show a significant deviation from the course of reaction in methanol.The results are discussed in terms of conformational control and restricted movement of the radical through adsorption on silica gel.Factors affecting the efficiency of modification of photochemical reactivity on silica gel surface have been examined.
Modification of Photochemistry by Cyclodextrin Complexation: Competitive Norrish Type I and Type II Reactions of Benzoin Alkyl Ethers
Reddy, G. Dasaratha,Usha, G.,Ramanathan, K. V.,Ramamurthy, V.
, p. 3085 - 3093 (2007/10/02)
The photochemical Norrish type I and type II reactions of cyclodextrin-bound benzoin methyl ether, benzoin ethyl ether, and benzoin isopropyl ether have been investigated in aqueous solution and in the solid state.Irradiation in cyclodextrin media leads to a large change in product distribution from that found in benzene and methanol.In aqueous solution type II products compete with type I, and in the solid state type II products constitute more than 90percent of the product distribution.This sensitivity was interpreted as a measure of changes in the ground state distribution of reactive and nonreactive (type II) conformers brought about by cyclodextrin inclusion.Cage effects also play a significant role in altering the product distribution. 1H NMR and X-ray powder photographic studies provide support for complexation.
