Abstract Rate constants for the enolisation reactions of title compounds have been measured by their rates of halogenation at 25 C in water, in several buffers, in dilute hydrochloric acid, in dilute sodium hydroxide, and in the presence of some metal ion salts. The results have been compared with those previously obtained from the corresponding reactions of acetophenone and a number of other acetyl heterocycles. Electronegativity of ...
