p-Toluenesulfonic acid → HCID 57001829, compound

HRID 2249098Notes

Reaction equation

HRID 2249098 reaction equation
[F:1][C:2]1[CH:7]=[CH:6][C:5]([S:8][CH2:9][CH:10]([CH3:17])[CH:11](O)[CH2:12][C:13](=[O:15])[CH3:14])=[CH:4][CH:3]=1.C1(C)C=CC(S(O)(=O)=O)=CC=1>C1(C)C=CC=CC=1>[F:1][C:2]1[CH:3]=[CH:4][C:5]([S:8][CH2:9][CH:10]([CH3:17])[CH:11]=[CH:12][C:13](=[O:15])[CH3:14])=[CH:6][CH:7]=1

Participants

4

Reactant 2

HCID 6101p-Toluenesulfonic acidHCID 146928186-(4-Fluorophenylthio)-4-hydroxy-5-methyl-2-hexanone

Product 1

HCID 57001829HCID 57001829, compoundYield 96.8%

Reagents, catalysts & solvents 1

HCID 1140TolueneSolvent

Procedure

1.00 Gram of 6-(4-fluorophenylthio)-4-hydroxy-5-methyl-2-hexanone was dissolved in 100 ml of toluene, and 0.02 g of p-toluene sulfonic acid was added thereto. The resulting mixture was refluxed for 1.5 hours with stirring. After having been cooled, the mixture was washed with a saturated aqueous sodium hydrogencarbonate solution and then saturated aqueous sodium chloride solution. Then the mixture was dried over anhydrous magnesium sulfate. Removing the solvent from the mixture under reduced pressure gave 1.08 g of 6-(4-fluorophenylthio)-5-methyl-3-hexen-2-one. (trans : cis =3.7 : 1) (purity: 83.5%). The yield was 96.8%. Production example 61

Workup

  1. temperatureThe resulting mixture was refluxed for 1.5 hours
  2. temperatureAfter having been cooled
  3. washthe mixture was washed with a saturated aqueous sodium hydrogencarbonate solution
  4. dry with materialThen the mixture was dried over anhydrous magnesium sulfate
  5. customRemoving the solvent from the mixture under reduced pressure

Sources & evidence

ORD record
ord-49529812af7d44a8a2358220433b2e0b
Source dataset
uspto-grants-1991_08
Patent number
US05041679

Reaction notes

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