HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 1860254Generated: November 2, 2026
Pyrrole-2-carboxaldehyde → HCID 9964774, compound
https://huagongshe.com/reaction/1860254
Participants
| Role | Name | HCID | Charge |
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| Reactant | Pyrrole-2-carboxaldehyde | HCID 13854 | — |
| Reactant | HCID 18626995 | HCID 18626995 | — |
| Solvent | Isopropanol | HCID 3776 | — |
| Solvent | Piperidine | HCID 8082 | — |
| Product | HCID 9964774 | HCID 9964774 | 20.7% |
Reaction Steps
5,6-Dihydro-5-oxo-4H-thieno[2,3-b]pyrrole-2-carbonitrile (32 mg, 0.2 mmol) was dissolved in a solution of 1% piperidine in 2-propanol (1 ml). Pyrrole-2-carboxaldehyde (37 mg, 0.39 mmol) 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 (6 ml) and the precipitated solid was collected by filtration and washed with water to give 10 mg of (Z)-5,6-dihydro-5-oxo-4-[(1H-pyrrol-2-yl)methylene]-4H-thieno[2,3-b]pyrrole-2-carbonitrile as a yellow solid. MS(ES): m/e 242 [M+H].
Provenance & Evidence
| DOI | 10.6084/m9.figshare.5104873.v1 |
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| Patent number | US06528653B2 |
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| Source dataset | uspto-grants-2003_03 |
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| ORD ID | ord-1fe29018f99442c4a16aa98c359122df |
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| Source note | uspto-grants-2003_03 |
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