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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 56920Generated: October 30, 2026

Trifluoroacetic acid → 2-{4-[5-Chloro-2-(difluoromethoxy)phenyl]-5-methoxy-2-oxopyridin-1(2H)-yl}-4-methoxybutanoic acid

https://huagongshe.com/reaction/56920

Reaction equation

Participants

RoleNameHCIDCharge
ReactantTrifluoroacetic acidHCID 6422—
Reactanttert-Butyl 2-{4-[5-chloro-2-(difluoromethoxy)phenyl]-5-methoxy-2-oxopyridin-1(2H)-yl}-4-methoxybutanoateHCID 117622722—
Product2-{4-[5-Chloro-2-(difluoromethoxy)phenyl]-5-methoxy-2-oxopyridin-1(2H)-yl}-4-methoxybutanoic acidHCID 117622801—

Reaction Steps

201 mg (purity 91%, 0.39 mmol) of tert-butyl 2-{4-[5-chloro-2-(difluoromethoxy)phenyl]-5-methoxy-2-oxopyridin-1(2H)-yl}-4-methoxybutanoate (racemate) were hydrolysed with TFA according to General Method 6A. Yield: 212 mg (purity 82%, quant.)

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS09434690B2
Source datasetuspto-grants-2016_09
ORD IDord-b58a376da8dd42b6b94ed63e742f5b0a
Source noteuspto-grants-2016_09