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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 2263131Generated: October 31, 2026

Water → HCID 86245081, compound

https://huagongshe.com/reaction/2263131

Reaction equation

Participants

RoleNameHCIDCharge
ReactantWaterHCID 962—
ReactantPyridineHCID 1049—
Reactant3-Amino-5-methylisoxazoleHCID 66172—
Reactant2,2,2-Trichloroethyl chloroformateHCID 87063—
SolventTetrahydrofuranHCID 8028—
ProductHCID 86245081HCID 8624508191.4%

Reaction Steps

To a solution of 5-methylisoxazole-3-amine (1.00 g, 10.2 mmol) and pyridine (0.998 ml, 12.2 mmol) in tetrahydrofuran (34 ml) was added 2,2,2-trichloroethyl chloroformate (1.69 ml, 12.2 mmol) with ice-cooling and the mixture was stirred at room temperature for 1 hour. Water was poured into the reaction mixture and the mixture was extracted with ethyl acetate. The extract was washed with water and dried over anhydrous magnesium sulfate and the solvent was distilled off under reduced pressure. Hexane was poured to the residue and a solid was collected by filtration to obtain the desired product (2.55 g, 91.4%).

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS07851473B2
Source datasetuspto-grants-2010_12
ORD IDord-16d64ba0d36249c6a32a691f2b8cb31e
Source noteuspto-grants-2010_12