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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 2165669Generated: November 1, 2026

Diethyl Ether → 1-Ethyl-5,6,8-trifluoro-1,4-dihydro-4-oxo-7-(4-thiomorpholinyl)-3-quinolinecarboxylic acid

https://huagongshe.com/reaction/2165669

Reaction equation

Participants

RoleNameHCIDCharge
ReactantDiethyl EtherHCID 3283—
ReactantThiomorpholineHCID 67164—
Reactant1-Ethyl-5,6,7,8-tetrafluoro-1,4-dihydro-4-oxo-3-quinolinecarboxylic acidHCID 13851019—
SolventN-methyl-2-pyrrolidoneHCID 13387—
Product1-Ethyl-5,6,8-trifluoro-1,4-dihydro-4-oxo-7-(4-thiomorpholinyl)-3-quinolinecarboxylic acidHCID 14839352—

Reaction Steps

A 289 mg portion of 1-ethyl-5,6,7,8-tetrafluoro-1,4-dihydro-4-oxo-3-quinolinecarboxylic acid was dissolved in 3 ml of 1-methyl-2-pyrrolidone. A 350 mg portion of thiomorpholine was added and the mixture was stirred for 2 hours. Ether was added, the solid collected and recrystallized from acetone, giving 250 mg of the desired product as a white solid, mp 308°-310° C.

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS04940710
Source datasetuspto-grants-1990_07
ORD IDord-097532e6bfa1437a973d54cc0687c745
Source noteuspto-grants-1990_07