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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 2072295Generated: October 30, 2026

4-Chloroaniline → HCID 22769951, compound

https://huagongshe.com/reaction/2072295

Reaction equation

Participants

RoleNameHCIDCharge
Reactant4-ChloroanilineHCID 7812—
Reactant4H-Pyran-3-carboxylic acid, 2,6-dimethyl-4-oxo-, methyl esterHCID 12281371—
Catalystp-Toluenesulfonic acid monohydrateHCID 521998—
SolventTolueneHCID 1140—
ProductHCID 22769951HCID 2276995146.8%

Reaction Steps

40 g of 3-carbomethoxy-2,6-dimethylpyr-4-one and 30.2 g of 4-chloroaniline are dissolved in 400 ml of toluene along with 400 mg of p-toluenesulfonic acid monohydrate. The reaction mixture is refluxed for four hours. The solvent is removed and the product crystallized from ether to yield 30 g of N-(4-chlorophenyl)-3-carbomethoxy-2,6-dimethylpyrid-4-one (m.p. 189°-90°).

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS04051142
Source datasetuspto-grants-1977_09
ORD IDord-a580e2bca85b4ff7b5cd8acf32593bad
Source noteuspto-grants-1977_09