Ferricyanide oxidation of dihydropyridines and analogs
作者:Michael F. Powell、James C. Wu、Thomas C. Bruice
DOI:10.1021/ja00325a024
日期:1984.6
La reaction de dihydro-1,4 nicotinamides substitues en 1, du benzyl-1 dihydro-1,4 quinoleinecarboxamide-3 etdela methyl-10 dihydro-9,10 acridine avec Fe(CN) 6 3− est du premier ordre en ferricyanure et en substrat
La反应 de dihydro-1,4 nicotinamides substitues en 1, du benzyl-1 dihydro-1,4 quinoleinecarboxamide-3 et de lamethyl-10 dihydro-9,10 acridine avec Fe(CN) 6 3− est du prime ordre en铁氰尿和底物
Coenzyme models. Part 35. Charge separation on the micelle surface as a strategy to prove the multi-step reaction mechanism in NADH model reductions
We have found that (i) the reaction of NADHmodel compounds with potassium persulphate (PPS) in anionic and non-ionic micelles initiates radical polymerisation of acrylamide and (ii) that reductive desulphonation of 2,4,6-trinitrobenzenesulphonate and 4-carboxy-2,6-dinitrobenzenesulphonate by NADHmodel compounds in deuterium oxide in the presence of the micelles gives 1,3,5-trinitrobenzene and 3,5-dinitrobenzoic
A Kinetic Study of the Reaction of 1-Propyl-1,4-dihydronicotinamide with Hexacyanoferrate(III)
作者:Tadashi Okamoto、Atsuyoshi Ohno、Shinzaburo Oka
DOI:10.1246/bcsj.53.330
日期:1980.2
The reaction of 1-propyl-1,4-dihydronicotinamide with hexacyanoferrate(III) in 20% aqueous methanol follows a second-order rate law with first order with respect to each reactant concentration. Kinetic parameters are ΔH\eweq: (8.8±0.4)×103 J mol−1 and ΔS\eweq: −1.8×102 J mol−1 K−1, the observed kinetic isotope effect, kH/kD, being 1.51. The mechanism of the reaction is discussed.
Models for nicotinamide coenzymes. Isotope effect discrepancies in the reaction of dihydronicotinamides with trifluoroacetophenone are due to adduct formation
作者:David M. Chipman、Ruth Yaniv、Paul Van Eikeren
DOI:10.1021/ja00529a060
日期:1980.4
Isotope effects were measured during oxidation-reduction reactions of two dihydronicotinamides. All data reported can be accounted for by the reversible formation of an adduct between the dihydronicotinamide and a ketone which is not on the pathway for the oxidation-reduction reaction. The kinetics of the redox reaction are explained by a simple hydride transfer. (BLM)