Reactivity of biologically important reduced pyridines. IV. Effect of substitution on ferricyanide-mediated oxidation rates of various 1,4-dihydropyridines
作者:Marcus E. Brewster、Agnes Simay、Klara Czako、David Winwood、Hassan Farag、Nicholas Bodor
DOI:10.1021/jo00276a039
日期:1989.7
Reactivity of biologically important reduced pyridines V. Relative importance of electron versus proton loss in ferricyanide-mediated oxidation of dihydronicotinamides
作者:Marcus E. Brewster、James J. Kaminski、Zoltan Gabanyi、Klara Czako、Agnes Simay、Nicholas Bodor
DOI:10.1016/s0040-4020(01)89076-1
日期:——
Kinetics of ferricyanide-mediatedoxidation of various 1-(4-substituted phenyl)-1,4-dihydronicotinamides were studied assuming either a rate determining initial electron loss or a rate determining proton loss following a rapid pre-equilibrium step. Values obtained using both methods were similar. In addition, vertical ionization potentials generated using the AM1 molecular orbital approximation were