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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 1520094Generated: November 4, 2026

Sulfuric Acid → HCID 118093608, compound

https://huagongshe.com/reaction/1520094

Reaction equation

Participants

RoleNameHCIDCharge
ReactantSulfuric AcidHCID 1118—
Reactant4-Amino-N-methylbenzenemethanesulfonamideHCID 2778131—
ReactantSodium NitriteHCID 23668193—
SolventWaterHCID 962—
ProductHCID 118093608HCID 11809360882.2%

Reaction Conditions

Temperature0 °C

Reaction Steps

Add sulfuric acid (2.5 mL, 44.9 mmol) to a suspension of 1-(4-aminophenyl)-N-methyl-methanesulfonamide (7.5 g, 37.5 mmol) in water (56.2 mL) and chill the reaction mixture to 0° C. Slowly, drop wise add a solution of sodium nitrite (2.8 g; 41.2 mmol) in water (37.5 mL) to this slurry. Stir the resulting mixture at 0° C. for 20 m, then remove the ice bath and heat the reaction at 100° C. Cool the mixture to room temperature. Quench the reaction with an excess of water and extract with EtOAc. Combine the EtOAc extracts, wash the extracts with brine; dry over MgSO4; filter; and concentrate the filtrate under reduced pressure to yield the title compound as an orange solid (6.2 g, 66%). MS (m/z): 219 (M+H2O).

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS09073901B2
Source datasetuspto-grants-2015_07
ORD IDord-d128f66d239a46f68d6c71ffade4e76c
Source noteuspto-grants-2015_07