Modification of photochemical reactivity by cyclodextrin complexation: a remarkable effect on the photobehavior of \alpha -alkyldibenzyl ketones

Rao, Nageshwer B and Syamala, MS and Turro, NJ and Ramamurthy, V (1987) Modification of photochemical reactivity by cyclodextrin complexation: a remarkable effect on the photobehavior of \alpha -alkyldibenzyl ketones. In: The Journal of Organic Chemistry, 52 (25). pp. 5517-5521.

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Abstract

The Norrish type I and type II reactions of cyclodextrin-included \alpha-alkyldibenzyl ketones were examd. in aq. soln. and in the solid state. The photolysis of solid cyclodextrin complexes led to a single product, diphenylethane, and that of complexes in aq. soln. gave a product arising from the rearrangement of \alpha -alkyldibenzyl ketones. Conformational and super-cage effects are proposed to be responsible for this photobehavior. The difference in the products from solid and soln. complexes is attributed to the differences in the restriction imposed by the host on the translational motions of the geminate radical pairs.

Item Type:	Journal Article
Publication:	The Journal of Organic Chemistry
Publisher:	American Chemical Society
Additional Information:	Copright belongs to American Chemical Society
Department/Centre:	Division of Chemical Sciences > Organic Chemistry
Date Deposited:	19 Mar 2008
Last Modified:	19 Sep 2010 04:43
URI:	http://eprints.iisc.ac.in/id/eprint/13419

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