Constant selectivity in proton transfer reactions to carbon bases in aqueous sulphuric acid; the kinetic acidity function HC‡
Abstract
The acid-catalysed hydrogen exchange of 4-nitro-NN-dimethylaniline has been measured in aqueous sulphuric acid (25–100%), enabling the calculation of a kinetic acidity function HC‡ which defines the selectivity of proton transfer reactions for a wide variety of carbon bases over a wide range of reactivity.