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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 617210Generated: October 26, 2026

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

https://huagongshe.com/reaction/617210

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 resulting mixture was treated according to the same manner as that described in Reference Example 1 to obtain ethyl 6,7-dimethoxy-4-(3,4-dimethoxyphenyl)-2-methylquinoline-3-carboxylate (83%) which was recrystallized from ethanol.

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS05948782
Source datasetuspto-grants-1999_09
ORD IDord-499119c8b01048c1b06fd46125f1280b
Source noteuspto-grants-1999_09