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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 1773543Generated: November 2, 2026

Hydrochloric Acid → HCID 15892659, compound

https://huagongshe.com/reaction/1773543

Reaction equation

Participants

RoleNameHCIDCharge
ReactantHydrochloric AcidHCID 313—
ReactantUreaHCID 1176—
Reactant4-Ethyl-3-nitroanilineHCID 22708680—
ReactantSodium NitriteHCID 23668193—
SolventWaterHCID 962—
ProductHCID 15892659HCID 1589265990%

Reaction Conditions

Temperature0 °C

Reaction Steps

A solution of sodium nitrite (0.11 g, 1.32 mmol) in water (1 mL) was added, dropwise, at 0° C., to a suspension of 4-ethyl-3-nitro-phenylamine (80%, 0.25 g, 1.20 mmol) in a mixture of concentrated hydrochloric acid (2 mL) and water (4 mL). The reaction mixture was stirred at 0° C. for 5 minutes and then urea (15 mg, 0.24 mmol) was added. The resulting mixture was stirred for 10 minutes and then was poured into a suspension of cuprous chloride (0.18 g, 1.8 mmol) in a mixture of concentrated hydrochloric acid (1.5 mL) and water (0.6 mL) at 80° C. The reaction mixture was stirred at 80° C. for 2 hours and then was extracted with ethyl acetate. The organic extracts were washed with an aqueous solution of sodium hydroxide (1 M) and water, dried over anhydrous sodium sulfate, filtered and evaporated under reduced pressure to give 200 mg (90% yield) of 4-chloro-1-ethyl-2-nitro-benzene as an oil.

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS09255110B2
Source datasetuspto-grants-2016_02
ORD IDord-9638734ba2cb444582238cdd709a7eec
Source noteuspto-grants-2016_02