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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 1860263Generated: October 30, 2026

HCID 18626983, compound → HCID 178513499, compound

https://huagongshe.com/reaction/1860263

Reaction equation

Participants

RoleNameHCIDCharge
ReactantHCID 18626983HCID 18626983—
ReactantHCID 178519874HCID 178519874—
SolventIsopropanolHCID 3776—
SolventPiperidineHCID 8082—
ProductHCID 178513499HCID 17851349945.5%

Reaction Conditions

Temperature75 °C

Reaction Steps

5,6-Dihydro-5-oxo-4H-thieno[2,3-b]pyrrole-2-carboxamide (30 mg, 0.17 mmol) was dissolved in a solution of 1% piperidine in 2-propanol (2 ml). 3-Phenyl-1H-pyrazole-4-carboxaldehyde (0.18 mmol, 31 mg) was added in one portion and the mixture heated at 75° C. for 1 hour. The reaction mixture was poured into an ice/water mixture (2 ml) and the precipitated solid was collected by filtration and washed with water to give 26 mg of (Z)-5,6-dihydro-5-oxo-4-[(3-phenyl-1H-pyrazol-4-yl)methylene]-4H-thieno[2,3-b]pyrrole-2-carboxamide as a yellow/brown solid. MS(ES): m/e 337 [M+H].

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS06528653B2
Source datasetuspto-grants-2003_03
ORD IDord-d19dda4e2fd2405585c0f1cba46562e4
Source noteuspto-grants-2003_03