Results Reaction of 1, 2-Diazenedicarboxamide (DDA) with Salts of Arenesulfinic Acids. When DDA and either the zinc or sodium salt of arenesulfinic acids are combined in equivalent amounts in MezSO solution7 at room temperature, a rapid reaction occurs, to yield the corresponding sulfonyldiazanecarboxamides (11, R=" 2) in high yield. NMR analysk of freshly combined MezSO-& solutions of DDA and zinc bis (p-toluenesulfinate)(1 ...