HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 977205Generated: October 26, 2026
Piperidine → 4-[(3,4-Dihydroxy-5-cyanophenyl)methylidene]-2-thioxoimidazolidin-5-one
https://huagongshe.com/reaction/977205
Participants
| Role | Name | HCID | Charge |
|---|
| Reactant | Piperidine | HCID 8082 | — |
| Reactant | 2-Thiohydantoin | HCID 1274030 | — |
| Reactant | 5-Formyl-2,3-dihydroxybenzonitrile | HCID 15292583 | — |
| Solvent | Acetic Acid | HCID 176 | — |
| Product | 4-[(3,4-Dihydroxy-5-cyanophenyl)methylidene]-2-thioxoimidazolidin-5-one | HCID 54390461 | — |
Reaction Steps
A solution containing 0.58 g of thiohydantoin, 0.82 g of 3,4-dihydroxy-5-cyanobenzaldehyde and 0.1 ml of piperidine in 10 ml of acetic acid was heated for 4 h at 100° C. The product was filtered and washed with ether. Yield 0.51 g, mp 210°-213° C.
Provenance & Evidence
| DOI | 10.6084/m9.figshare.5104873.v1 |
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| Patent number | US05614541 |
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| Source dataset | uspto-grants-1997_03 |
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| ORD ID | ord-9a48546ee4fd456493cbf86ab7ca7bd5 |
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| Source note | uspto-grants-1997_03 |
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