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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 394858Generated: October 30, 2026

Hydrochloric Acid → 1-[3-Chloro-4-(1,3-oxazol-2-yl)phenyl]-4,4,4-trifluoro-1,3-butanedione

https://huagongshe.com/reaction/394858

Reaction equation

Participants

RoleNameHCIDCharge
ReactantHydrochloric AcidHCID 313—
ReactantEthyl trifluoroacetateHCID 9794—
ReactantSodium MethoxideHCID 10942334—
Reactant1-[3-Chloro-4-(1,3-oxazol-2-yl)phenyl]-1-ethanoneHCID 22313800—
SolventMethanolHCID 887—
SolventWaterHCID 962—
Solventtert-Butyl methyl etherHCID 15413—
Product1-[3-Chloro-4-(1,3-oxazol-2-yl)phenyl]-4,4,4-trifluoro-1,3-butanedioneHCID 22313839113.1%

Reaction Steps

To a solution of 1-[3-chloro-4-(1,3-oxazol-2-yl)phenyl]-1-ethanone (1.89 g, 8.572 mmol) in t-butyl methyl ether (100 mL) were added ethyl trifluoroacetate (1.1 mL, 9.38 mmol) and 28%wt sodium methoxide in MeOH (2.6 ml) at 0° C. and stirred at room temperature for 4 hours. Water (100 mL) was added to the mixture, the mixture was neutralized with 2N HCl, extracted with ethyl acetate (100 mL×2) and dried over MgSO4. Removal of the solvent, gave a title compound (3.08 g).

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS06603008B1
Source datasetuspto-grants-2003_08
ORD IDord-45c4597739ef47e89607dfffac3f3c96
Source noteuspto-grants-2003_08