Boric Acid → 6-(4-Trifluoromethylphenylthio)-3-hexen-2-one

Participants

Reaction Conditions

Reaction Steps

0.85 Gram of boric acid was added to 80 ml of toluene, and the resulting mixture was refluxed for 3 hours with stirring and then cooled to 30° C. A solution of 6.00 g of 4-hydroxy-6-(4-trifluoromethylphenylthio)-2-hexanone in 20 ml of toluene was added thereto, and the resulting mixture was further refluxed for 8 hours with stirring. The refluxed mixture was washed three times with hot water and then dried over anhydrous magnesium sulfate. Removing the solvent from the mixture under reduced pressure gave 5.58 g of 6-(4-trifluoromethylphenylthio)-3-hexen-2-one (trans : cis =38.7 : 1) (purity: 99.3%). The yield was 98.4%.

Provenance & Evidence