Photoreduction of triplet benzophenone by amines: Role of their structure

Abstract

The reaction of triplet benzophenone with the tertiary amines triisopropylamine and diisopropyl-3-pentylamine does not lead to photoreduction. An explanation of this unusual behaviour is given based on the particular structure of these amines. The initial charge transfer events are compared with those exhibited by 1,4-diazabicyclo[2.2.2]octane and triethylamine.