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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 268063Generated: October 25, 2026

Acetaldehyde → 2-Amino-4-methyl-1,4,5,6,7,8-hexahydro-5-oxoquinoline-3-carboxylic acid ethyl ester

https://huagongshe.com/reaction/268063

Reaction equation

Participants

RoleNameHCIDCharge
ReactantAcetaldehydeHCID 177—
Reactant1,3-CyclohexanedioneHCID 10434—
ReactantCarbamimidoyl-acetic acid ethyl esterHCID 4599837—
SolventEthanolHCID 702—
Product2-Amino-4-methyl-1,4,5,6,7,8-hexahydro-5-oxoquinoline-3-carboxylic acid ethyl esterHCID 1239110653%

Reaction Steps

Upon boiling a solution of 2.8 g of acetaldehyde, 5.6 g of cyclohexane-1,3-dione and 6.5 g of amidinoacetic acid ethyl ester in 100 ml of ethanol for 2 hours, 2-amino-4-methyl-1,4,5,6,7,8-hexahydro-5-oxoquinoline-3carboxylic acid ethyl ester of melting point 236°C (ethanol) is obtained.

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS03946026
Source datasetuspto-grants-1976_03
ORD IDord-b03513af0d3e48e5a28f9c9ea827990d
Source noteuspto-grants-1976_03