Synthesis and Crystal Structures of Some New 2-(Diphenylamino)-4,5-Disubstituted Thiazole Derivatives

The reactions of diphenylamine and benzoyl isothiocyanates with phenacyl bromide or methyl 2-bromoacetate in the presence of triethylamine yield 2,4,5-trisubstituted thiazole derivatives. The molecular structures of [2-(diphenylamino)-4-phenylthiazol-5-yl]( o-tolyl) methanone and methyl 4-(4-chlorophenyl)-2-(diphenylamino)thiazole-5-carboxylate have been fully determined by means of single crystal X-ray diffraction methods.