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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 1025972Generated: October 30, 2026

Phosphorus tribromide → HCID 66678783, compound

https://huagongshe.com/reaction/1025972

Reaction equation

Participants

RoleNameHCIDCharge
ReactantPhosphorus tribromideHCID 24614—
Reactant5-Isoxazolemethanol,3-(trifluoromethyl)-(9CI)HCID 13307993—
SolventDimethylformamideHCID 6228—
ProductHCID 66678783HCID 6667878359.3%

Reaction Conditions

Temperature0 °C

Reaction Steps

To a solution of (3-(trifluoromethyl)isoxazol-5-yl)methanol (2.5 g, 15 mmol) in dimethylformamide (25 mL) was added drop wise tribromophosphine (4.64 g 17.1 mmol, 1.15 eq) and the mixture was stirred at 0° C. for 15 min and at ambient temperature for 2 h. The reaction mixture was partitioned between 10% sodium bicarbonate and dichloromethane. The phases were separated and the organic phase was washed with water and passed over a plug of silica eluting with dichloromethane. The UV active product fractions were collected and evaporated to yield the title compound as colorless oil (2.04 g 59.3%), MS 229 and 231(M)+.

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS08729105B2
Source datasetuspto-grants-2014_05
ORD IDord-a9c93eb233354a8dbc882469cf305b9a
Source noteuspto-grants-2014_05