Photosensitized Hydride Transfer. Highly Regioselective 1,4-Photoreduction of NAD(P)+ Models under Visible Light with an Organometallic Rhodium(III) Porphyrin as Sensitizer

Article abstract of DOI:10.1246/cl.1987.1651

An organometallic acetyl-Rh complex of octaethylporphyrin catalyzes under the visible light the photoreduction of 1-benzylnicotinamide (BNA⁺) or 1-benzyl-3-acetylpyridinium ion (BAP⁺) as NAD(P)⁺ model with tetraphenylborate as a reductant and an alcohol as a proton source to give the corresponding 1,4-dihydro derivative (BNAH or BAPH) as the sole reduction product and biphenyl as the oxidation product of B(C6H5)4^-.