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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 918537Generated: October 25, 2026

1,3-Cyclohexanedione → 2-Amino-4-(3-carbethoxyphenyl)-1,4,5,6,7,8-hexahydro-5-oxoquinoline-3-carboxylic acid ethyl ester

https://huagongshe.com/reaction/918537

Reaction equation

Participants

RoleNameHCIDCharge
Reactant1,3-CyclohexanedioneHCID 10434—
ReactantCarbamimidoyl-acetic acid ethyl esterHCID 4599837—
ReactantEthyl 3-formylbenzoateHCID 11084437—
SolventEthanolHCID 702—
Product2-Amino-4-(3-carbethoxyphenyl)-1,4,5,6,7,8-hexahydro-5-oxoquinoline-3-carboxylic acid ethyl esterHCID 1239111654%

Reaction Steps

Upon heating a solution of 8.9 g of 3-carbethoxybenzaldehyde, 5.6 g of cyclohexane-1,3-dione and 6.5 g of amidinoacetic acid ethyl ester in 100 ml of ethanol for 4 hours, 2-amino-4-(3-carbethoxyphenyl)-1,4,5,6,7,8-hexahydro-5-oxoquinoline-3-carboxylic acid ethyl ester of melting point 234°C (ethanol) is obtained. Yield: 54% of theory.

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS03971790
Source datasetuspto-grants-1976_07
ORD IDord-a7509ede36fa441f9bfb1b01f9b7c459
Source noteuspto-grants-1976_07