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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 978516Generated: October 29, 2026

Ethyl 7-bromoacetyl-1-ethyl-6-fluoro-1,4-dihydro-4-oxo-3quinolinecarboxylate → 7-[2-[1-(N-acetylamino)ethyl]-4-thiazolyl]-1-ethyl-6-fluoro-1,4-dihydro-4-oxo-3-quinolinecarboxylic acid ethyl ester

https://huagongshe.com/reaction/978516

Reaction equation

Participants

RoleNameHCIDCharge
ReactantEthyl 7-bromoacetyl-1-ethyl-6-fluoro-1,4-dihydro-4-oxo-3quinolinecarboxylateHCID 13853634—
Reactant2-(Acetylamino)thiopropionamideHCID 14023635—
SolventEthanolHCID 702—
Product7-[2-[1-(N-acetylamino)ethyl]-4-thiazolyl]-1-ethyl-6-fluoro-1,4-dihydro-4-oxo-3-quinolinecarboxylic acid ethyl esterHCID 13772775—

Reaction Steps

According to example 30, reacting 7-bromoacetyl-1-ethyl-6-fluoro-1,4-dihydro-4-oxo-3-quinolinecarboxylic acid ethyl ester with 2-(acetylamino)thiopropionamide in ethanol gave 7-[2-[1-(N-acetylamino)ethyl]-4-thiazolyl]-1-ethyl-6-fluoro-1,4-dihydro-4-oxo-3-quinolinecarboxylic acid ethyl ester, mp 236°-238° C., which was hydrolyzed with refluxing 6N hydrochloric acid to afford the title compound, mp 246°-250° C. (dec).

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS04665079
Source datasetuspto-grants-1987_05
ORD IDord-93419fa7c0e241279cf8b894b2077f6c
Source noteuspto-grants-1987_05