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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

Reaction equation

Participants

RoleNameHCIDCharge
ReactantPiperidineHCID 8082—
Reactant3-Pyridinecarboxaldehyde, 2-amino-HCID 737633—
Reactant2,2-DiethylpropanedioateHCID 6951563—
ProductEthyl 2-hydroxy-1,8-naphthyridine-3-carboxylateHCID 1156477791%

Reaction Conditions

Temperature120 °C

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

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS08415333B2
Source datasetuspto-grants-2013_04
ORD IDord-28abf7985e8344c8a2782bd6678832b6
Source noteuspto-grants-2013_04