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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 2307537Generated: November 1, 2026

Ethanol → HCID 178470303, compound

https://huagongshe.com/reaction/2307537

Reaction equation

Participants

RoleNameHCIDCharge
ReactantEthanolHCID 702—
ReactantThionyl ChlorideHCID 24386—
ReactantHCID 178524907HCID 178524907—
ProductHCID 178470303HCID 17847030363.7%

Reaction Conditions

Temperature5 °C

Reaction Steps

To 10 ml of a solution of 1.00 g (8.85 mmol) of 1H-1,2,4-triazole-3-carboxylic acid in 99.5% ethanol was added dropwise under stirring and cooling at 5° C. 1.58 g (13.2 mmol) of thionylchloride. The mixture was stirred under heating at 70° C. for 4 hours. Then, the solvent was removed under reduced pressure and the obtained residue was washed with 18 ml of ethylacetate. The obtained crystal was dried at room temperature under reduced pressure to give 1.00 g of 1H-1,2,4-triazole-3-carboxylic acid ethyl ester hydrochloride. Yield: 63.7%.

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS06831177B1
Source datasetuspto-grants-2004_12
ORD IDord-35174b74639244858e1de3d9ef9dbd09
Source noteuspto-grants-2004_12