Photochemical and Thermal Behavior of 2-Benzoyl-3-ethoxycarbonyl-methylcyclohex-2-enone and Its Derivatives

Abstract

Preparation and cyclization of 2-benzoyl-3-ethoxycarbonylmethylcyclohex-2-enone and its derivatives have been investigated. Photochemical ring-closure followed by oxidative dehydrogenation was observed in suitably fixed triene derivatives. The results suggest that the cyclization of the photoenols (trienes) of 3-alkyl substituted 2-benzoylcyclohex-2-enones to anthracenone derivatives occurs photochemically.