Tetrahedron letters

Microwave-assisted synthesis of 4, 4′-diaminotriphenylmethanes

D Guzman-Lucero, J Guzman, D Likhatchev…

Index: Guzman-Lucero; Guzman; Likhatchev; Martinez-Palou Tetrahedron Letters, 2005 , vol. 46, # 7 p. 1119 - 1122

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Citation Number: 35

Abstract

Different methods for the preparation of the aforementioned compounds have been described such as from 4,4′-diaminodiphenylmethanes and amines, 8 by condensation of amines and anilines in acid medium 9 or using zeolites 10 and also by oxidative coupling of anilines with metal catalyst 11 or clay-mediated microwave-assisted chemistry from N,N-disubstituted anilines, in which DTMs are obtained in low to modest yields. 12 Most of these protocols, ...