Geometrical Effects on the Intramolecular Quenching of π,π* Aromatic Ketones by Phenols and Indoles
作者:Julia Pérez-Prieto、Salah-Eddine Stiriba、Francisco Boscá、Agustín Lahoz、Luis R. Domingo、Fouad Mourabit、Sandra Monti、Miguel A. Miranda
DOI:10.1021/jo048973v
日期:2004.12.1
has been used to determine the possible geometrical effects in the intramolecular quenching of triplet excited ketones, resulting in formal hydrogen abstraction. The results are compared with those obtained in the intermolecular process. In both cases, substitution either at the thienyl or the phenyl moiety has a marked influence on the photoreactivity. Time-resolved experiments showed that the rate constants