CuI catalyzed sulfamidation of arylboronic acid using TsNBr2 at room temperature

Unprecedented 1,3-tert-butyl migration via the C–N single bond scission of isonitrile: an expedient metal-free route to N-sulfonyl amidines

Treatment of tert-butyl isonitrile with ArSO₂NBr₂ and nitrile led to simultaneous C–N single bond scission of isonitrile and migration of tert-alkyl group to nitrogen centre of the nitrile precursor, resulting in the formation of N-sufonyl amidine.

A tunable pair electrochemical strategy for the synthesis of new benzenesulfonamide derivatives

A green, facile and tunable pair electrochemical process was developed for the synthesis of new benzenesulfonamide derivatives by using reductive controlled potential electrolysis of dinitrobenzene (DNB) in the presence of arylsulfinic acids (ASAs). In addition to the usual features associated with paired electrochemical methods, eg high energy efficient, this method has a tunable characteristic, so that, by adjusting the potential, different products can be synthesized. By applying the potential of -0.4 V vs. Ag/AgCl, N-hydroxy-N-(4-nitrophenyl)benzenesulfonamide derivatives are selectively formed, while, by applying the potential of -1.1 V vs. Ag/AgCl, the final products are N-(4-amino-3-(phenylsulfonyl)phenyl) benzenesulfonamide derivatives. This work beautifully shows the potential applications of the electrochemistry as a powerful tool for the synthesis of organic compounds.

Facile, catalyst-free cascade synthesis of sulfonyl guanidinesviacarbodiimide coupling with amines

A facile, catalyst-free cascade synthesis of sulfonyl guanidinesviacarbodiimide intermediate coupling with amines at room temperature has been disclosed.