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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 722222Generated: October 30, 2026

Hydrochloric Acid → 3-(4-amino-3-trifluoromethoxyphenyl)-4H-[1,2,4]-oxadiazol-5-one hydrochloride

https://huagongshe.com/reaction/722222

Reaction equation

Participants

RoleNameHCIDCharge
ReactantHydrochloric AcidHCID 313—
ReactantMethanolHCID 887—
ReactantN-[4-(5-oxo-4,5-dihydro-[1,2,4]oxadiazol-3-yl)-2-trifluoromethoxyphenyl]acetamideHCID 135839374—
Solvent1,4-DioxaneHCID 31275—
Product3-(4-amino-3-trifluoromethoxyphenyl)-4H-[1,2,4]-oxadiazol-5-one hydrochlorideHCID 136360624—

Reaction Steps

The mixture consisting of 200 mg of N-[4-(5-oxo-4,5-dihydro-[1,2,4]oxadiazol-3-yl)-2-trifluoromethoxyphenyl]acetamide, 10 ml of methanol and 0.5 ml of a 4M solution of hydrochloric acid in dioxane was stirred at room temperature for 15 hours. After concentrating the volatile fractions on a rotary evaporator, a yellowish oil remains.

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS07138414B2
Source datasetuspto-grants-2006_11
ORD IDord-7669183fc8fa4123a4e51df9ac4b45c4
Source noteuspto-grants-2006_11