Photodimerization of coumarins in micelles: limitations of alignment effect.

Muthuramu, K and Ramnath, N and Ramamurthy, V (1983) Photodimerization of coumarins in micelles: limitations of alignment effect. In: Journal of Organic Chemistry, 48 (11). pp. 1872-1876.

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Abstract

Organized media such as micelles have shown great promise in achieving regio- and stereoselectivity in photochemical cycloaddition reactions as has been shown by recent reports. 7-Alkoxy- and 4-methyl-7-alkoxycoumarins dimerize in organic solvents to give the syn head-tail dimer. However, dimerization of these coumarins in SDS and CTAB micelles did not show any reversal in this trend. The results probably indicate that the micellar orientational effect is most effective only in those systems where the forces that control regiochemistry are weaker than hydrophobic association energies.

Item Type:	Journal Article
Publication:	Journal of Organic Chemistry
Publisher:	American Chemical Society
Additional Information:	Copyright of this article belongs to American Chemical Society
Department/Centre:	Division of Chemical Sciences > Organic Chemistry
Date Deposited:	24 Jun 2008
Last Modified:	19 Sep 2010 04:46
URI:	http://eprints.iisc.ac.in/id/eprint/14411

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