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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 1809085Generated: November 1, 2026

Hydrochloric Acid → HCID 59542561, compound

https://huagongshe.com/reaction/1809085

Reaction equation

Participants

RoleNameHCIDCharge
ReactantHydrochloric AcidHCID 313—
ReactantEthyl 5-ethylthiophene-3-carboxylateHCID 12588559—
SolventEthanolHCID 702—
SolventSodium HydroxideHCID 14798—
ProductHCID 59542561HCID 59542561—

Reaction Conditions

Temperature140 °C

Reaction Steps

5-Ethyl-thiophene-3-carboxylic acid ethyl ester (0.83 g, 3.8 mmol) was dissolved in a solution of aqueous sodium hydroxide (1 M, 6 mL) and ethanol (4 mL). The mixture was then heated to 140° C. for 10 minutes using microwave irradiation. The reaction mixture was acidified with 1 N hydrochloric acid and the resulting precipitate was isolated by filtration, washed with water and then dried under vacuum to give the title compound (0.53 g). 1H NMR (400 MHz, DMSO-d6): δ 7.05 (s, 1H), 2.75 (q, 2H), 1.4 (t, 3H), 1.2 (t, 3H).

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS08362008B2
Source datasetuspto-grants-2013_01
ORD IDord-eb0f1c4f528a4689a4cbc1885d7ca301
Source noteuspto-grants-2013_01