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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 1531693Generated: October 31, 2026

Diethyl (ethoxymethylene)malonate → HCID 21250043, compound

https://huagongshe.com/reaction/1531693

Reaction equation

Participants

RoleNameHCIDCharge
ReactantDiethyl (ethoxymethylene)malonateHCID 6871—
Reactant4-Fluoro-2-nitroanilineHCID 67769—
SolventDiphenyl EtherHCID 7583—
ProductHCID 21250043HCID 2125004345%

Reaction Steps

Using an analogous procedure to that described in Example 2, in the section relating to the preparation of starting materials, 4-fluoro-2-nitroaniline and diethyl ethoxymethylenemalonate were reacted, and then refluxed in diphenyl ether to give 3-ethoxycarbonyl-6-fluoro-8-nitro-4-oxo-3,4-dihydroquinoline in 45% yield, mp 278-280° C.

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS06200974B1
Source datasetuspto-grants-2001_03
ORD IDord-b0224a04de764e748880d5b792cbabd3
Source noteuspto-grants-2001_03