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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 1789633Generated: October 30, 2026

Boron tribromide → 2-Trifluoromethylhydroquinone

https://huagongshe.com/reaction/1789633

Reaction equation

Participants

RoleNameHCIDCharge
ReactantBoron tribromideHCID 25134—
Reactant4-Ethoxy-2-(trifluoromethyl)phenolHCID 22034997—
SolventDichloromethaneHCID 6344—
Product2-TrifluoromethylhydroquinoneHCID 1111660663.2%

Reaction Conditions

Temperature-78 °C

Reaction Steps

Boron tribromide (11.8 g) was slowly added dropwise to dichloromethane (41 mL) cooled to −78° C., and then Compound (e) (6.47 g) dissolved in dichloromethane (60 mL) was slowly added dropwise at the same temperature and the mixture was stirred at room temperature for 2 hours. The reaction mixture was then poured into ice water and the aqueous layer was extracted with ether. The organic layers were combined, washed with saturated aqueous sodium chloride, and dried over anhydrous magnesium sulfate. The solvent was distilled off under reduced pressure to obtain 3.53 g of Compound (g).

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS07070838B2
Source datasetuspto-grants-2006_07
ORD IDord-3eaf5a5c4504444dad2bbf538ca8f3b7
Source noteuspto-grants-2006_07