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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 2054466Generated: October 30, 2026

3,4-diaminobenzenesulfonamide → HCID 10068962, compound

https://huagongshe.com/reaction/2054466

Reaction equation

Participants

RoleNameHCIDCharge
Reactant3,4-diaminobenzenesulfonamideHCID 2735927—
ReactantSodium BisulfiteHCID 23665763—
ReactantHCID 58668627HCID 58668627—
SolventDimethylacetamideHCID 31374—
ProductHCID 10068962HCID 1006896243.6%

Reaction Conditions

Temperature200 °C

Reaction Steps

3-(6-amino-5-formylpyridin-3-yl)benzonitrile (0.06 g, 0.27 mmol), 3,4-diaminobenzene-1-sulphonamide (0.050 g, 0.27 mmol), and NaHSO3 (0.029, 0.40 mmol) were combined in 2 mL of dimethylacetamide and heated to 200° C. in the SmithSynthesizer™ microwave instrument for 10 minutes. Upon cooling, the solvent was removed and the residue was chromatographed on silica gel eluting with hexanes/ethyl acetate (0 to 100% EtOAc over 10 minutes) to afford 2-[2-amino-5-(3-cyanophenyl)pyridin-3-yl]-1H-benzimidazole-6-sulfonamide (0.046 g) as a solid.

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS07329678B2
Source datasetuspto-grants-2008_02
ORD IDord-d7fe3d9d55394ba59c4bc82294e406c8
Source noteuspto-grants-2008_02