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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 1860262Generated: October 31, 2026

Piperidine → HCID 69844752, compound

https://huagongshe.com/reaction/1860262

Reaction equation

Participants

RoleNameHCIDCharge
ReactantPiperidineHCID 8082—
Reactant5-Methyl-1H-imidazole-4-carbaldehydeHCID 2795887—
ReactantHCID 18626983HCID 18626983—
SolventIsopropanolHCID 3776—
ProductHCID 69844752HCID 69844752—

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). 4-Methyl-5-imidazole carboxaldehyde (0.18 mmol, 15 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 22 mg of (Z)-5,6-dihydro-4-[(3-methoxy-1H-pyrrol-2-yl)methylene]-5-oxo-4H-thieno[2,3-b]pyrrole-2-carboxamide as a yellow/brown solid. MS(ES): m/e 275 [M+H].

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS06528653B2
Source datasetuspto-grants-2003_03
ORD IDord-1ecc54a5b6d649aba8581e2e84b23490
Source noteuspto-grants-2003_03