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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 634640Generated: October 30, 2026

Hydrochloric Acid → HCID 21260392, compound

https://huagongshe.com/reaction/634640

Reaction equation

Participants

RoleNameHCIDCharge
ReactantHydrochloric AcidHCID 313—
ReactantHCID 21260383HCID 21260383—
ReactantPyridinium hydrochlorideHCID 21584435—
ProductHCID 21260392HCID 2126039286.2%

Reaction Conditions

Temperature185 °C

Reaction Steps

A neat mixture of crude 4-(5-chloro-2-methoxyphenyl)-1,2-dihydro-2-oxo-6-(trifluoromethyl)-3-quinolineacetic acid prepared in Step C (1.45 g, 3.5 mmol) and pyridinium hydrochloride (5 g, 43.3 mmol) was heated at 185° C. for 3 hours. Reaction mixture was allowed to cool and 1N HCl was added and then extracted with EtOAc to afford the title compound (1.20 g, 86%): mp 158-160° C.;

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS06184231B2
Source datasetuspto-grants-2001_02
ORD IDord-3c75ff5111e84d9b9a169bbba751edc1
Source noteuspto-grants-2001_02