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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 2291694Generated: November 1, 2026

Hydrochloric Acid → 3-(Trifluoromethyl)-1,2-oxazol-5-amine

https://huagongshe.com/reaction/2291694

Reaction equation

Participants

RoleNameHCIDCharge
ReactantHydrochloric AcidHCID 313—
ReactantEthanolHCID 702—
ReactantHydroxyamine hydrochlorideHCID 443297—
Reactant4,4,4-Trifluoro-3-oxobutanenitrileHCID 13843540—
SolventWaterHCID 962—
Product3-(Trifluoromethyl)-1,2-oxazol-5-amineHCID 1391399613.8%

Reaction Steps

Trifluoroacetoacetonitrile (1.37 g, 0.010 mole), hydroxylamine hydrochloride (0.69 g, 0.010 mole), ethanol and water were heated under reflux for 3 hours. After the addition of hydrochloric acid (1.21 g, 0.012 mole), the mixture was further heated under reflux to give the title compound (0.21 g, 13.7%).

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS04797492
Source datasetuspto-grants-1989_01
ORD IDord-174030b76d364d9e86edef6a6abb14ae
Source noteuspto-grants-1989_01