HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 1961443Generated: November 1, 2026
Piperidine → Ethyl 2-hydroxy-1,8-naphthyridine-3-carboxylate
https://huagongshe.com/reaction/1961443
Participants
| Role | Name | HCID | Charge |
|---|
| Reactant | Piperidine | HCID 8082 | — |
| Reactant | 3-Pyridinecarboxaldehyde, 2-amino- | HCID 737633 | — |
| Reactant | 2,2-Diethylpropanedioate | HCID 6951563 | — |
| Product | Ethyl 2-hydroxy-1,8-naphthyridine-3-carboxylate | HCID 11564777 | 91% |
Reaction Steps
2-Amino-3-pyridine carboxaldehyde (1.0 g, 8.19 mmol) was suspended in diethylmalonate (6.2 ml, 41.0 mmol) in a screw cap pressure tube. Piperidine (1.6 ml, 16.4 mmol) was added and the tube was sealed. The mixture was heated to 120° C. for 3.0 hours. The mixture was allowed to cool. The precipitate formed was filtered and washed with Et2O to yield 1.62 g (91%) of the title compound.
Provenance & Evidence
| DOI | 10.6084/m9.figshare.5104873.v1 |
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| Patent number | US08415333B2 |
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| Source dataset | uspto-grants-2013_04 |
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| ORD ID | ord-28abf7985e8344c8a2782bd6678832b6 |
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| Source note | uspto-grants-2013_04 |
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