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The reactions of N‐substituted saccharins and phthalimides with amines were promoted by water. Various o‐sulfamoyl benzamides and N,N′‐disubstituted phthalamides were prepared in moderate to good yields. These reactions have prominent advantages, such as short reaction time, less by‐products and simple isolation of the products. Water can probably stabilize the reaction intermediates and facilitate precipitation of the ring‐opening products. When steric hindrance arose, hydrolytic compounds, either free acid or salts of the acids, were obtained. Possible reason for the formation of amine salts of o‐sulfamoyl benzoic acids was proposed.

Various o‐sulfamoyl benzamides and N,N′‐disubstituted phthalamides are prepared under mild reaction conditions using water as the reaction medium.

Reduced Graphene Oxide as a Recyclable Catalyst for Dehydrogenation of Hydrazo Compounds. -Reduced graphene oxide efficiently catalyzes the aerobic oxidative dehydrogenation of aromatic hydrazo compounds. The corresponding azo products are obtained in high yields under mild conditions. The catalyst can be reused at least five times without significant loss of catalytic activity. -(BAI, L.-S.; GAO, X.-M.; ZHANG, X.; SUN, F.-F.; MA*, N.; Tetrahedron Lett. 55 (2014) 33, 4545-4548, http://dx.