Skip to product details

Chemical product profile

HONGKUN / PRODUCT DIRECTORY

4-Nitrobenzenesulfonamide | CAS 6325-93-5

A para-nitro aromatic sulfonamide used as a nitrogen-transfer precursor in published asymmetric aziridination research, with an unsubstituted sulfonamide nitrogen that distinguishes it from nosyl chlorides and N-substituted derivatives.

CAS6325-93-5
Molecular formulaC6H6N2O4S
Molecular weight202.19 g/mol

Product overview

The para relationship between nitro and sulfonamide groups defines 4-nitrobenzenesulfonamide. Its SO2NH2 group supplies the nitrogen-bearing unit used in reported alkene aziridination, while the nitro-substituted aromatic sulfonyl group remains attached to that nitrogen. This is the parent sulfonamide, rather than a sulfonyl chloride or a protected amine carrying an additional N-substituent. Those distinctions are central to reagent selection. Qualification should confirm ring substitution and the unsubstituted sulfonamide functionality, then examine related aromatic components by a suitable chromatographic method. For catalytic reaction development, water and other process-relevant impurities should be agreed against the actual reaction system.

Chemical identity

Chemical name
4-Nitrobenzenesulfonamide
CAS number
6325-93-5
Molecular formula
C6H6N2O4S
Molecular weight
202.19 g/mol

Application context

Published asymmetric aziridination research uses 4-nitrobenzenesulfonamide as the nitrogen source in a copper-catalysed, oxidant-mediated reaction with alkenes. The active nitrogen-transfer precursor is generated within the reaction system; the purchased sulfonamide supplies the sulfonyl-bound nitrogen. The resulting aziridine retains the 4-nitrobenzenesulfonyl group on its nitrogen, making this a route to specifically protected nitrogen heterocycles. Material evaluation for this research use should preserve the exact para isomer and N-unsubstituted identity. Residual substituted sulfonamides or other aromatic components should be reviewed for their relevance to conversion and product isolation.

Chemistry and synthetic role

A para-nitrophenyl group is bonded to SO2NH2. The nitrogen is unsubstituted by carbon and can serve as the starting nitrogen functionality in activated nitrogen-transfer chemistry.

Quality review

Distinguish sulfonamide from sulfonyl chloride

Confirm SO2NH2 identity by structure-sensitive analysis.

Confirm para substitution

Check the 4-nitro pattern and the method used to assess positional isomers.

Review N-substituted impurities

Agree relevant related-substance limits and water criteria for the catalytic study.

Preparing a specification

Specify the para-nitro parent sulfonamide, identification method, chromatographic purity and relevant N-substituted or positional-isomer impurities. Agree water requirements for the intended reaction.

Packaging and storage

Packaging and net weight are agreed for the selected grade, order quantity and destination. Check the actual supplier SDS and label for storage and transport requirements.

Documentation

Request a batch COA, SDS and the analytical methods for the acceptance criteria below. Confirm which supporting chromatograms and identity data are available from the selected manufacturer.

Procurement questions

Is this 4-nitrobenzenesulfonyl chloride?

No. The sulfonamide has NH2 in place of the acid chloride functionality.

Can the ortho isomer be substituted?

The substitution pattern changes the reagent and the sulfonyl group introduced into the product.

Is this already an active nitrene reagent?

It is a sulfonamide precursor; the reported reaction generates an activated nitrogen-transfer species in situ.

Technical sources
  1. PubChem CID 22784NCBI / PubChem
  2. 4-NitrobenzenesulfonamideSigma-Aldrich
  3. Copper(I)-catalyzed asymmetric alkene aziridination mediated by PhI(OAc)2: A facile one-pot procedureKwong et al.; Hong Kong Baptist University research record