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- W2034189413 abstract "Metal ion catalyzed reduction of substituted nitrosobenzenes by 1-benzyl-3,5-bis(1-pyrrolidinylcarbonyl)1,4-dihydropyridine (BPDH) in acetonitrile has been studied for seven bivalent metal ions. The reduction of N-methylacridinium salt (MA) has also been examined. In the former cases, it was found that the metal ions catalyze the reduction by forming a 1:1 complex with BPDH according to a Michaelis–Menten type saturation kinetics which allowed to derive the association constants, KM, for the complexation and the second-order rate constants, k2, for the reduction. A linear relationship was found between logk2 and the ionization potentials of metal ions with a positive slope. A linear Hammett relationship was also observed between logk2 and the Hammett σ constants with a positive ρ value for three metal ions. These results suggest that a bivalent metal ion is sandwiched between the BPDH and the substrate and acts as a Lewis acid to stabilize the incipient N-oxide anion of the substrate which is formed by hy..." @default.
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- W2034189413 date "1987-05-01" @default.
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- W2034189413 title "Metal Ion-Catalyzed Reduction of Substituted Nitrosobenzenes by 1-Benzyl-3,5-bis(1-pyrrolidinylcarbonyl)1,4-dihydropyridine in Acetonitrile" @default.
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- W2034189413 doi "https://doi.org/10.1246/bcsj.60.1887" @default.
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