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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 661242Generated: November 3, 2026

Water → 4-Nitrophenyl 3-(3-ethoxy-1,2,4-oxadiazol-5-yl)-5-[3-fluoro-4-(trifluoromethoxy)phenyl]-piperidine-1-carboxylate

https://huagongshe.com/reaction/661242

Reaction equation

Participants

RoleNameHCIDCharge
ReactantWaterHCID 962—
ReactantTriethylamineHCID 8471—
Reactant4-Nitrophenyl chloroformateHCID 82129—
Reactant3-(3-Ethoxy-1,2,4-oxadiazol-5-yl)-5-[3-fluoro-4-(trifluoromethoxy)phenyl]piperidineHCID 58116536—
SolventDichloromethaneHCID 6344—
Product4-Nitrophenyl 3-(3-ethoxy-1,2,4-oxadiazol-5-yl)-5-[3-fluoro-4-(trifluoromethoxy)phenyl]-piperidine-1-carboxylateHCID 58116547—

Reaction Conditions

Temperature0 °C

Reaction Steps

195 mg (0.48 mmol) of 3-(3-ethoxy-1,2,4-oxadiazol-5-yl)-5-[3-fluoro-4-(trifluoromethoxy)phenyl]piperidine were initially charged in 4.5 ml of dichloromethane, cooled to 0° C. and admixed with 0.27 ml (193 mg, 1.91 mmol) of triethylamine and 96 mg (0.48 mmol) of 4-nitrophenyl chloroformate. The reaction mixture was stirred at RT for 1 hour and admixed with water, and the organic phase was removed. The organic phase was dried over magnesium sulphate, filtered and concentrated under reduced pressure. Yield: 290 mg (94% of theory)

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS08084469B2
Source datasetuspto-grants-2011_12
ORD IDord-f9ecf270e5c54fddac51961fabd72c0c
Source noteuspto-grants-2011_12