Issue 6, 2003
From the journal:

Physical Chemistry Chemical Physics

Time-resolved IR studies of cyclic enone triplet excited states and their reactions with alkenes†‡

Andrew D. Cohen,a   Brett M. Showalter,a   Daniel A. Brady,a   Craig A. Keneskya  and  John P. Toscano*a  

* Corresponding authors

a Department of Chemistry, Johns Hopkins University, 3400 North Charles Street, Baltimore, MD 21218, USA
E-mail: jtoscano@jhu

Abstract

The ππ* triplet excited states of 3-phenyl-2-cyclohexenone (1) and 3-phenyl-2-cyclopentenone (2) have been observed by time-resolved infrared (TRIR) spectroscopy. The reaction of various alkenes with the triplet excited state of 2 has also been studied by TRIR spectroscopy, and the partitioning between fragmentation and ring closure of the biradical intermediates involved has been estimated. Within a series of structurally related biradicals, more stable ones undergo ring closure more efficiently.

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Article information

DOI
https://doi.org/10.1039/B209805A
Article type
Paper
Submitted
09 Oct 2002
Accepted
20 Dec 2002
First published
22 Jan 2003

Phys. Chem. Chem. Phys., 2003,5, 1059-1063

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Time-resolved IR studies of cyclic enone triplet excited states and their reactions with alkenes

A. D. Cohen, B. M. Showalter, D. A. Brady, C. A. Kenesky and J. P. Toscano, Phys. Chem. Chem. Phys., 2003, 5, 1059 DOI: 10.1039/B209805A

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