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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 2272974Generated: October 31, 2026

Water → HCID 89826376, compound

https://huagongshe.com/reaction/2272974

Reaction equation

Participants

RoleNameHCIDCharge
ReactantWaterHCID 962—
Reactant4-Bromophenacyl bromideHCID 7454—
ReactantCesium carbonateHCID 10796—
ReactantHCID 72212396HCID 72212396—
SolventAcetoneHCID 180—
ProductHCID 89826376HCID 89826376—

Reaction Conditions

Temperature35 °C

Reaction Steps

To a solution of 15.7 g (100 mmol) 4-fluoro-1H-pyrrole-2-carboxylic acid ethyl ester and 27.8 g (100 mmol) 2,4′-dibromoacetophenone in 150 ml acetone is added 16.6 g (120 mmol) cesium carbonate. The resulting suspension is stirred at 35° C. for 3 days. The reaction mixture is added to 600 ml water under stirring. The resulting precipitate is filtered off, washed with water and dried under vacuum to afford 1-[2-(4-bromo-phenyl)-2-oxo-ethyl]-4-fluoro-1H-pyrrole-2-carboxylic acid ethyl ester as light yellow solid; HPLC/MS 3.14 (B), [M+H] 354/356;

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS09120805B2
Source datasetuspto-grants-2015_09
ORD IDord-202bf1b40f6e4111b8c058b39896c620
Source noteuspto-grants-2015_09