Photochemistry of macrocyclicketones within zeolites: competition between Norrish typeI and typeII reactivity

Ramamurthy, V. ; Lei, Xue-Gong ; Turro, Nicholas J. ; Lewis, Thillairaj J. ; Scheffer, John R. (1991) Photochemistry of macrocyclicketones within zeolites: competition between Norrish typeI and typeII reactivity Tetrahedron Letters, 32 (52). pp. 7675-7678. ISSN 0040-4039

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Official URL: http://www.sciencedirect.com/science/article/pii/0...

Related URL: http://dx.doi.org/10.1016/0040-4039(91)80562-K

Abstract

Photolysis of macrocyclic mono- and diketones (1 and 2) included in X and Y zeolites gives Norrish type I products in addition to the products obtained via the Norrish type II process, the only observed process in isotropic media. Enhancement of the type I over the type II process is cation-dependent and especially large enhancements are obtained with Li and Na as cations. The zeolite effect is attributed to a reduction in the rate of the Norrish type II a-hydrogen abstraction process.

Item Type:Article
Source:Copyright of this article belongs to Elsevier Science.
ID Code:91457
Deposited On:21 May 2012 12:20
Last Modified:21 May 2012 12:20

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