Tris(2,2'-bipyridine)ruthenium(2+)-mediated photoreduction of olefins with 1-benzyl-1,4-dihydronicotinamide: a mechanistic probe for electron-transfer reactions of NAD(P)H-model compounds

Photoredox catalysis by [Ru(bpy)3]2+ to trigger transformations of organic molecules. Organic synthesis using visible-light photocatalysis and its 20th century roots

“…All these examples provided important early evidence that various dyes can function as remarkable accelerators of some lightinduced reductions. Another type of transformations photosensitized by [Ru(bpy) 3 ] 2+ have been independently discovered by the group of Pac (Scheme 4) 19,20 . In their work, Pac et al studied reactions of various olefins with 1-benzyl-1,4-dihydronicotinamide (BNAH) as an NADH model.…”

“…The reaction course was found to be governed by the structural parameters 19,20 ) of the used carbonyl compound. Thus, di-2-pyridylketone (17) led to the alcohol 18 together with a dimeric dihydronicotinamide structure 10, whereas benzaldehyde was converted to a secondary alcohol 19 in high 21,22 ) yield.…”

Photocatalytic CO2 reduction by a mixed metal (Zr/Ti), mixed ligand metal–organic framework under visible light irradiation

“…Both MOFs were tested for photocatalytic CO2 reduction under visible light irradiation. The reaction was conducted in 5 mL of a mixed solution of 4:1 (v/v) acetonitrile (MeCN)-triethanolamine (TEOA, as a sacrificial base), and 0.1 M 1-benzyl-1,4-dihydronicotinamide (BNAH, as a sacrificial reductant) [27][28][29]. The suspension, which contained 5 mg of MOF, was purged with 1 bar of CO2 gas for 30 min followed by light irradiation by a 300 W Xe lamp.…”

Photosensitive Metal—Organic Systems

“…The other common sensitization mechanism involves electron transfer between photoexcited M and ground-state substrate. In the exam ple outlined in Scheme 15 (46,47), visible-light irradiation of the photosensitizer Ru(bipy) 3…”