Abstract
4,4′-Bis[N-methyl(diethoxyphosphonyl)-1-(2-furyl)]benzidine and 4,4′-bis[N-methyl(diisopropoxyphosphonyl)-1-(2-furyl)]benzidine have been synthesized through addition of diethyl phosphite and diisopropyl phosphite, respectively, to the Schiff base N,N'-difurfurylidenebenzidine. The compounds have been characterized by elemental analysis, TLC and IR spectra. A comparable study of their 1H-NMR spectra and 1H-NMR spectra of 4,4′-bis[N-methyl(diethoxyphosphonyl)-I-phenyl]benzidine has been carried out. Some 1H-NMR data of 4,4′-bis[N-methyl(dimethoxyphosphonyl)-1-phenyl]diaminodiphenylmethane, 4,4′-bis[N-methyl(diethoxyphosphonyl) 1-phenyl]diaminodiphenylmethane and 4.4′-bis [N-methyl(diisopropoxyphosphonyl)-1-phenyl]diaminodiphenylmethane in DMSO-d6 solution are also presented.
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