A novel type of hydride-transfer photocatalysis by RuII–pyridine complexes: regiocontrolled reduction of an NAD(P) model compound by triethylamine
Abstract
[Ru(trpy)(bpy)(py)]2+(trpy = 2,2′ : 6′,2″-terpyridine, bpy = 2,2′-bipyridine, py = pyridine) and [Ru(LL)2(py)2]2+(LL = a bidentate ligand) photocatalysed the regiocontrolled reduction of 1-benzyl-4-carbamoyle-pyridinium cation to the dihydro form with no formation of the half-reduced dimers, the photocatalysis proceeds through the photosubstitution of a py ligand of the Ru complexes and the subsequent photoformation of [Ru(trpy)(bpy)H]+ or [Ru(LL)2(py)H]+.
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