Reaction #1876814

Reaction equation

sodium hydrogen sulfite

hydrogen peroxide water

Acetic acid

Compound ( d )

4-ethoxy-2-trifluoromethylphenylboric Acid

→

Compound ( e )

Yield 97.7%

4-ethoxy-2-trifluoromethylphenol

Yield 97.7%

Solvents

THF

Conditions

Workup

1. 1
   Otherthe resulting reaction mixture
2. 2
   Temperaturewas carefully heated
3. 3
   workup.STIRRINGstirred at 50° C. for 4 hours
4. 4
   Extractionthe reaction mixture was extracted three times with ether
5. 5
   Washwashed with aqueous saturated sodium hydrogen sulfite
6. 6
   Dryingdried over anhydrous magnesium sulfate
7. 7
   workup.DISTILLATIONThe solvent was distilled off under reduced pressure

Procedure

Acetic acid (21.3 g) was added to a mixture of THF (200 mL) and Compound (d) (8.28 g) at room temperature, and the mixture was stirred at 0° C. under a nitrogen atmosphere. After adding 30% hydrogen peroxide water (40.1 g) dropwise, the resulting reaction mixture was carefully heated and stirred at 50° C. for 4 hours. Saturated aqueous sodium hydrogen sulfite (200 mL) was then slowly added dropwise at 0° C., and the reaction mixture was extracted three times with ether. The organic layers were combined, washed with aqueous saturated sodium hydrogen sulfite, and dried over anhydrous magnesium sulfate. The solvent was distilled off under reduced pressure to obtain 6.67 g of Compound (e).

Source