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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 48447Generated: October 26, 2026

Formamide → HCID 178518030, compound

https://huagongshe.com/reaction/48447

Reaction equation

Participants

RoleNameHCIDCharge
ReactantFormamideHCID 713—
ReactantMethyl 3-amino-2-thiophenecarboxylateHCID 89652—
SolventWaterHCID 962—
ProductHCID 178518030HCID 178518030—

Reaction Conditions

Temperature200 °C

Reaction Steps

3-aminothiophene-2-carboxylic acid methylester (1.6 g, 10 mmol) was added to formamide (3.4 ml), and the mixture was stirred at 200° C. for 2 hours. The reaction mixture was returned to room temperature, and water was added thereto, which was extracted with chloroform. The solid obtained by distilling off the solvent under reduced pressure was washed with ethyl acetate to obtain 4-hydroxythieno[3,2-d]pyrimidine (60 mg, 0.39 mmol).

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS06703421B1
Source datasetuspto-grants-2004_03
ORD IDord-acd8ccb1d4e34ab0a44c61593a48bc0e
Source noteuspto-grants-2004_03