Abstract

We synthesized a library of 32 sulfonamides via CuBr2 catalyzed Chan-Lam C−N coupling, reaching excellent yields (until 81 %) under ligand-base-free, mild conditions, and short reaction times. A new non-toxic, versatile and easy to prepare starting materials, N-[(Sulfonyl)imino]phenyliodinanes were first time proposed as the nitrogen source in this synthetic tool. Finally, the sulfonamides were used as valuable building blocks in the synthesis of mono-alkyl anilines through their alkylation and Fukuyama deprotection steps.