COMPARISON OF THE REACTIVITY OF THE MATERIALS HAVING 2 DIFFERENT KINDS OF FUNCTIONAL-GROUPS BY APPLYING HYDROGEN-ISOTOPE EXCHANGE-REACTION

The hydrogen-isotope exchange reaction between m- (or p-) aminobenzoic acid and HTO vapor has been observed in order to estimate the scale o f the reactivity of the material. Each rate constant has been obtained by the A ''-McKay plot method. Comparing the rate constants, the foll owing three items have been confirmed: (1) the reactivity of both COOH and NH2 groups increases with temperature; (2) the degree of the effe ct of the COOH (or NH2) group on the reactivity in m-aminobenzoic acid is larger than that in p-aminobenzoic acid; (3) the A ''-McKay plot m ethod is useful in studying the reactivity of the materials not only w ith one (or the same kinds of) functional group(s), but also with two different kinds of functional groups.