N- and N′-aryl substitution in benzamidines
Abstract
N-Phenyl substitution of amino- and imino-groups in benzamidines is shown to reduce basic strength by factors of ca. 10 and 1000, respectively. The configuration of the imino-N-phenyl ring is discussed. The structure of the predominant tautomer of N-(3-diethylaminopropyl)-N′-phenylbenzamidine is indicated.