Synthesis, crystal and molecular structure of methyl[(4- acetamidophenyl)sulfonyl]carbamate, precursor of herbicide Asulam

The methyl((4-aminophenyl)sulfonyl)carbamate is commercially known as Asulam. It is the most common trade name for a systemic and synergis- tic herbicide, which is incorporated by the plants through their foliage and roots, and is extensively used against weeds and brackens in the cultivation of gramine- ous, citric, banana and sugarcane, among others. The industrial procedure for ob- taining this carbamic compound includes the base-catalyzed hydrolysis of the methyl((4-acetamidophenyl)sulfonyl)carbamate. In this work a simple and conven- tional method for the synthesis of the Asulam intermediate and the characteriza- tion of its crystal and molecular structure utilizing X-Ray Diffraction and IR, NMR 1