Palladium-catalyzed <i>N</i>-arylsulfonamide formation from arylsulfonyl hydrazides and nitroarenes
作者:Feng Zhao、Bin Li、Huawen Huang、Guo-Jun Deng
DOI:10.1039/c5ra26588f
日期:——
A palladium-catalyzed construction for N-arylsulfonamide from nitroarenes and arylsulfonylhydrazides is developed. In this protocol, abundant and stable nitroarenes serve as the nitrogen sources by in situ reduction reaction of hydrogen released from arylsulfonylhydrazides. No external oxidants or reductants are needed for this kind of transformation.
Bissulfonamide derivatives of formula (I) are capable of inhibiting: a) the biosynthesis of aromatic amino acids via the shikimate pathway and b) the catabolism of quinic acid, wherein: Ar is an aryl or heteroaryl group; R1 and R2 are the same or different and each represent hydrogen or alkyl or R1 and R2 together form a C1-C3 alkylene group, -CO- or -CS-; and R3 and R4 are the same or different and each represent -alkyl-aryl, -alkyl-heteroaryl, -alkenyl-aryl, -alkenyl-heteroaryl, -alkynyl-aryl-alkynyl-heterorayl, aryl or heteroaryl.