Triplet photochemistry within zeolites through heavy atom effect, sensitization and light atom effect

Pitchumani, K. ; Warrier, M. ; Kaanumalle, Lakshmi S. ; Ramamurthy, V. (2003) Triplet photochemistry within zeolites through heavy atom effect, sensitization and light atom effect Tetrahedron, 59 (30). pp. 5763-5772. ISSN 0040-4020

Full text not available from this repository.

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

Related URL: http://dx.doi.org/10.1016/S0040-4020(03)00865-2

Abstract

Methods to generate triplets of organic molecules within zeolites have been established by employing the Zimmerman rearrangement of barrelenes, oxa-di-π-methane rearrangement of β,γ-unsaturated ketones and photodimerization of acenaphthylene as probe reactions. The two methods, heavy cation effect and triplet sensitization, are well established solution techniques and these work well within zeolites. The Zimmerman rearrangement of dibenzobarrelene is enhanced even within Li+ and Na+ exchanged zeolites and these are believed to be the result of slowing of the rearrangement to dibenzocyclooctatetraene from S1 through cation-π interaction. The methods described here provide an opportunity to explore the control afforded by the zeolite environment on triplet reactions.

Item Type:Article
Source:Copyright of this article belongs to Elsevier Science.
Keywords:Benzobarrelene; Zeolites; Zimmerman Rearrangement
ID Code:90064
Deposited On:04 May 2012 14:32
Last Modified:04 May 2012 14:32

Repository Staff Only: item control page