Electron-donor and -acceptor behavior of physiologically active substances and model compounds. XV. Electron-acceptor capacity of the N-H group in difluoronitroacetanilidesстатья
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Дата последнего поиска статьи во внешних источниках: 10 августа 2018 г.
Аннотация:Equil. consts. and thermodn. parameters were detd. for complexation of the NH group of difluoronitroacetanilides (I; R = H, R1 = H, Me, F, CF3, NO2; R = MeO, Me, F, NO2, R1 = H; R = Cl, R1 = CF3) with (Me2N)3PO in benzene. Values of О”S were generally more neg. than О”H values. The electron-acceptor ability of the NH group in I was not less than that of the OH group in phenol. The amide group in I prefers the trans orientation.