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Photoreduction de la benzophenone par des phtalimidines et des dihydro isoquinolones: Etude chimique par RMN PNIC |
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| Authors: | J.C. Gramain N. Simonet G. Vermeersch N. Febvay-Garot S. Caplain A. Lablache-Combier |
| Affiliation: | Laboratoire de Chimie et Biochemie des substances naturelles, Equipe de recherches associée au C.N.R.S. No. 392, Université de Clermont II B.P. 45-63670 Aubiere, France;Laboratoire de Physique, Faculté de Pharmacie-59045 Lille Cédex, France;Laboratoire de Chimie organique Physique assocé à l''Enscl, Era CNRS No. 827, Université des Sciences et Techniques, B.P. 36-59655-Villaneuve D''Asqc, France |
| Abstract: | Benzophenone is photoreduced by pthalimidines and dihydro isoquinolones. The hydrogen atom α to the nitrogen atom is abstracted and radical coupling leads to adducts. CIDNP studies of these adducts show inversion of polarisation for the adduct on the N-alkyl chain when the nitrogen is bound to a benzylic methylene. This inversion is explained by considering that the radical on the N-alkyl chain derives from the radical on the ring. |
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