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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 901218Generated: October 30, 2026

Diethyl Malonate → Ethyl 1-benzyl-4-hydroxy-2-oxo-1,2-dihydro-1,8-naphthyridine-3-carboxylate

https://huagongshe.com/reaction/901218

Reaction equation

Participants

RoleNameHCIDCharge
ReactantDiethyl MalonateHCID 7761—
Reactant1-Benzyl-1H-pyrido[2,3-d][1,3]oxazine-2,4-dioneHCID 13425103—
ProductEthyl 1-benzyl-4-hydroxy-2-oxo-1,2-dihydro-1,8-naphthyridine-3-carboxylateHCID 54729304—

Reaction Steps

Diethyl malonate can then be reacted with the 1-benzyl-1H-pyrido[2,3-d][1,3]oxazine-2,4-dione (2) to yield the intermediate 1-benzyl-4-hydroxy-2-oxo-1,2-dihydro-[1,8]-naphthyridine-3-carboxylic acid ethyl ester (3) as shown in Scheme 3:

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS07361760B2
Source datasetuspto-grants-2008_04
ORD IDord-09d9de3f43124adcb512c8b8b6f31305
Source noteuspto-grants-2008_04