Salt effects on the rates of protonation of amides

摘要: The rates of protonation three NN-dimethylamides have been measured in various electrolyte solutions using n.m.r. line broadening techniques. Activity coefficients the amides also determined. increase rapidly with increasing concentration. results are discussed relation to behaviour other acid catalysed reactions involving protonated intermediates. A comparison Li+ those alkali metals provides some evidence support recent reports strong interactions between and amides.