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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 464322Generated: October 27, 2026

Vanillin → E-8-(4-Acetoxy-3-methoxybenzylidene)-5,6,7,8-tetrahydro-4-methylquinoline

https://huagongshe.com/reaction/464322

Reaction equation

Participants

RoleNameHCIDCharge
ReactantVanillinHCID 1183—
ReactantAcetic AnhydrideHCID 7918—
Reactant5,6,7,8-Tetrahydro-4-methylquinolineHCID 185667—
CatalystZincchlorideHCID 3007855—
ProductE-8-(4-Acetoxy-3-methoxybenzylidene)-5,6,7,8-tetrahydro-4-methylquinolineHCID 10245630—

Reaction Steps

A mixture of 5,6,7,8-tetrahydro-4-methylquinoline (5.2 g), vanillin (5.37 g), zinc chloride (0.3 g) and acetic anhydride (50 ml) were refluxed under nitrogen for 16 hours. The solvent was removed by evaporation and the resulting residue was neutralised (Na2CO3) in the presence of ethyl acetate and was then extracted with ethyl acetate.

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS04547510
Source datasetuspto-grants-1985_10
ORD IDord-4f49006b3a8c48e883695fcfd9e08f68
Source noteuspto-grants-1985_10