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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 1602079Generated: November 1, 2026

Diethyl (ethoxymethylene)malonate → HCID 253770, compound

https://huagongshe.com/reaction/1602079

Reaction equation

Participants

RoleNameHCIDCharge
ReactantDiethyl (ethoxymethylene)malonateHCID 6871—
ReactantMethylureaHCID 11719—
ProductHCID 253770HCID 25377035%

Reaction Steps

74.08 g (1 mol) of N-methyl urea and 216.2 g (1 mol) diethylethoxymethylenemalonate were heated together at 122° C. for 24 hours, followed by 170° C. for 12 hours, to give the 3-methyluracil-5-carboxylic acid ethyl ester in 35% yield (following recrystallization from ethyl acetate).

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS05981467
Source datasetuspto-grants-1999_11
ORD IDord-c0374acb55fd45009a8c084a5a4e1dff
Source noteuspto-grants-1999_11