Mechanistic investigation on the reaction of 1,1-di-p-substituted phenyl-2,2-dinitroethylene with 1-benzyl-1,4-dihydronicotin-amide in oxygen saturated acetonitrile-clear evidence for intermediate mechanism

On the basis of the ratios of the reduction product to the oxidation product from the title reaction it is seen that there exists a mechanistic spectrum between polar mechanism and SET mechanism for the equivalent hydride transfer.