The kinetics and mechanism of the electrophilic substitution of heteroaromatic compounds. Part XXXVI. The nitration of some 1-phenylpyrazoles
Abstract
The kinetics of nitration of 1-phenylpyrazole and its 4- and 4′-nitro-derivatives, and the corresponding 2-methyl quaternary salts are used to elucidate the species which undergo nitration. The nitration rates are compared within the series and with those of other heteroaromatic compounds.