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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 1973417Generated: November 2, 2026

Diethyl (ethoxymethylene)malonate → Diethyl (3-methoxycarbonyl-4-methylthienyl)aminomethylenemalonate

https://huagongshe.com/reaction/1973417

Reaction equation

Participants

RoleNameHCIDCharge
ReactantDiethyl (ethoxymethylene)malonateHCID 6871—
ReactantMethyl 2-amino-4-methylthiophene-3-carboxylateHCID 2759773—
ProductDiethyl (3-methoxycarbonyl-4-methylthienyl)aminomethylenemalonateHCID 13217727—

Reaction Steps

Reaction of methyl 2-amino-4-methylthiophene-3-carboxylate with diethyl ethoxymethylenemalonate in a manner similar to that used in Reference Example 10 yields diethyl (3-methoxycarbonyl-4-methylthienyl)aminomethylenemalonate as crystals melting at 105.5°-106° C.

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS03997545
Source datasetuspto-grants-1976_12
ORD IDord-3bb6c6e809bb4ef6834c86580c84fb8a
Source noteuspto-grants-1976_12