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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 1458903Generated: November 2, 2026

Sulfuric Acid → Ethyl 4-(3,4-dimethoxyphenyl)-6,7-dimethoxy-2-methylquinoline-3-carboxylate

https://huagongshe.com/reaction/1458903

Reaction equation

Participants

RoleNameHCIDCharge
ReactantSulfuric AcidHCID 1118—
ReactantEthyl AcetoacetateHCID 8868—
Reactant2-Amino-4,5,3',4'-tetramethoxybenzophenoneHCID 9926967—
SolventAcetic AcidHCID 176—
ProductEthyl 4-(3,4-dimethoxyphenyl)-6,7-dimethoxy-2-methylquinoline-3-carboxylateHCID 1903237183%

Reaction Steps

Conc. sulfuric acid was added to a mixture of 2-amino-4,5,3',4'-tetramethoxybenzophenone, ethyl acetoacetate and acetic acid. The mixture was treated according to the same manner as that described in Example 1 to give ethyl 6,7-dimethoxy-4-(3,4-dimethoxyphenyl)-2-methylquinoline-3-carboxylate (83%) which was then recrystallized from ethanol.

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS05852039
Source datasetuspto-grants-1998_12
ORD IDord-75b25d46f70a42ca8d332f1d5c054113
Source noteuspto-grants-1998_12