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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 1068033Generated: November 4, 2026

Diethyl (ethoxymethylene)malonate → HCID 21192567, compound

https://huagongshe.com/reaction/1068033

Reaction equation

Participants

RoleNameHCIDCharge
ReactantDiethyl (ethoxymethylene)malonateHCID 6871—
ReactantHCID 21192615HCID 21192615—
SolventPyridineHCID 1049—
ProductHCID 21192567HCID 21192567—

Reaction Conditions

Temperature140 °C

Reaction Steps

A flask containing N-[4-(4-morpholinylmethyl)phenyl]tetrahydro-2H-pyran-4-amine (0.34 g) is treated with diethyl ethoxymethylenemalonate (0.30 mL) and pyridine (0.20 mL). The flask is tightly capped and heated to 140° C. for 2 hours. The reaction is cooled to room temperature and azeotroped under reduced pressure with toluene (3×). The residue is dissolved in dichloromethane and washed with water, brine, dried and concentrated under reduced pressure. The residue is chromatographed on silica eluting with 2% to 6% methanol in dichloromethane. The product-containing fractions are evaporated to give 0.41 g of diethyl 2-{[4-(4-morpholinylmethyl)(tetrahydro-2H-pyran-4-yl)anilino]methylene}malonate as a tan oil.

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS06248739B1
Source datasetuspto-grants-2001_06
ORD IDord-610da5d5d13941d293b1c97ac2ccb68f
Source noteuspto-grants-2001_06