An efficient method for the synthesis of novel N-sulfonylimines using TBAB under solvent-free conditions

Wahida Boufas, Billel Belhani,

Abstract

The condensation of various sulfonamides with aromatic aldehydes was effectively promoted in the presence of TBAB to produce the corresponding sulfonylimine products in good yields under solvent-free conditions. The sulfonamides were prepared starting from chlorosulfonylisocyanate (CSI), primary amine in three steps (carbamoylation, sulfamoylation and deprotection).