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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 1973667Generated: November 1, 2026

3-Aminocyclohex-2-en-1-one → 3-Methyl-7,8-dihydroquinolin-5(6H)-one

https://huagongshe.com/reaction/1973667

Reaction equation

Participants

RoleNameHCIDCharge
Reactant3-Aminocyclohex-2-en-1-oneHCID 78892—
Reactant3-Ethoxy-2-methyl-2-propenalHCID 559198—
SolventAcetic AcidHCID 176—
Product3-Methyl-7,8-dihydroquinolin-5(6H)-oneHCID 595192—

Reaction Conditions

Temperature0 °C

Reaction Steps

A mixture of 3-aminocyclohex-2-enone (24.1g, 0.22m) and 3-ethoxy-2-methylacrolein (27.7g, 0.24m) in glacial acetic acid (55 ml.) was heated at reflux for 24 hours, cooled to 0° C and filtered. The solid (5g.) was recrystallised from ethanol as colourless needles m.p. 253° and identified di(2-methylprop-2-enalyl)amine.

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS03998831
Source datasetuspto-grants-1976_12
ORD IDord-749abd9c823b4f22a93a170c00fc7d70
Source noteuspto-grants-1976_12