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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 263384Generated: October 30, 2026

Water → HCID 19037326, compound

https://huagongshe.com/reaction/263384

Reaction equation

Participants

RoleNameHCIDCharge
ReactantWaterHCID 962—
ReactantPotassium CarbonateHCID 11430—
ReactantAcetic acid, 2-bromo-2-fluoro-, ethyl esterHCID 2733407—
ReactantN-[4-Chloro-2-fluoro-5-(1-methylethoxy)phenyl]piperidine-2-carboxamideHCID 19037321—
SolventAcetonitrileHCID 6342—
SolventEthyl AcetateHCID 8857—
ProductHCID 19037326HCID 1903732621.1%

Reaction Steps

A mixture of potassium carbonate (724 mg, 5.24 mmol), ethyl bromofluoroacetate (882 mg, 4.76 mmol) and the product of Step A (1.5 g, 4.76 mmol) in acetonitrile (50 mL) was heated at reflux overnight. 100 mL of H2O and 200 mL of ethyl acetate were added to the mixture. The organic layer was separated, dried (MgSO4), filtered, and evaporated under vacuum to dryness. Flash chromatography yielded the title compound of Step B as a white solid (400 mg) m.p. 83°-85° C. 1H NMR δ7.21 (d,1H), 7.18 (d,1H), 4.92 (s,1H), 4.50 (m,1H), 4.16-4.09 (m,2H), 3.29 (m,1H), 2.95 (m,1H), 2.50 (m,1H), 2.10 (m,1H), 1.96 (m,1H), 1.80-1.58 (m,2H), 1.37 (d,6H), 1.35 (t,3H).

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS05643855
Source datasetuspto-grants-1997_07
ORD IDord-9dc2de2cdd334059be8b20ecf8b907cd
Source noteuspto-grants-1997_07