Reactivity of the amino groups in 3,3?-diamino-4,4?-di(p-aminophenoxy)diphenylsuIfone
摘要:
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 pK(a) values, and by the C-13 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.