Synthesis, characterization of some new 1-aroyl-3-(4-aminosulfonylphenyl) thioureas and crystal structure of 1-(3,4,5-trimethoxybenzoyl)- 3-(4-aminosulfonylphenyl)thiourea

A small library of novel 1-aroyl-3-(4-aminosulfonylphenyl)thiourea derivatives was synthesized by the reaction of sulfanilamide with substituted aroyl isothiocyanates in dry acetonitrile. The scope of the reaction was indicated by the synthesis of 1-undecanoyl-3-(4-aminosulfonylphenyl)thiourea, an acyl derivative involving alkanoyl isothiocyanate. All the compounds have been characterized by analytical and spectroscopic methods and in one case by single-crystal X-ray diffraction data.