Correlation of π,π* Triplet Energy of some Cyclic α,β-Unsaturated Ketones with Electroreduction Potentials

Abstract

The half-wave reduction potentials, E1/2's, of some cyclic enones have been determined in acetonitrile. A linear free-energy relationship was obtained between E1/2 and the lowest π,π* triplet state of the enones studied. This correlation enabled an estimate to be made of the triplet energy of the cyclohexenone, which was found to be ~70 kcal/mol.