N-(4-amino-2-sulfamoylphenyl)malonamic acid methyl ester 、
甲基磺酰氯 以
吡啶 为溶剂,
以to form the intermediate compound N-(4-methanesulfonylamino-2-sulfamoyl-phenyl)-malonamic acid methyl ester (V)的产率得到N-(4-methanesulfonylamino-2-sulfamoylphenyl)malonamic acid methyl ester