Abstract
Reactivities of the amino groups in 3,3′-diamino-4,4′-di(p-aminophenoxy)diphenylsulfone were estimated by MO calculations using the Paryzer-Parr-Pople method, by potentiometric measurement of their pKa values, and by the13C NMR spectroscopic study of the products obtained on reaction of the tetramine with two moles of 1,8-naphthalic anhydride. The results of these studies prove unambiguously the higher reactivity of the amino groups in positions 4 and 4′ of the phenoxide moieties.
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