p-Toluenesulfonic acid → HCID 57046712, compound

HRID 2249090Notes

Reaction equation

HRID 2249090 reaction equation
[F:1][C:2]1[CH:7]=[CH:6][CH:5]=[CH:4][C:3]=1[S:8][CH:9]([CH3:17])[CH2:10][CH:11](O)[CH2:12][C:13](=[O:15])[CH3:14].C1(C)C=CC(S(O)(=O)=O)=CC=1>C1(C)C=CC=CC=1>[F:1][C:2]1[CH:7]=[CH:6][CH:5]=[CH:4][C:3]=1[S:8][CH:9]([CH3:17])[CH2:10][CH:11]=[CH:12][C:13](=[O:15])[CH3:14]

Participants

4

Reactant 2

HCID 6101p-Toluenesulfonic acidHCID 14692819HCID 14692819, compound

Product 1

HCID 57046712HCID 57046712, compoundYield 73.1%

Reagents, catalysts & solvents 1

HCID 1140TolueneSolvent

Procedure

1.00 Gram of 6-(2-fluorophenylthio)-4-hydroxy- 2-heptanone 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 2 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 0.84 g of 6-(2-fluorophenylthio)-3-hepten-2-one. (trans : cis =5.1 : 1) (purity: 80.6%). The yield was 73.1%.

Workup

  1. temperatureThe resulting mixture was refluxed for 2 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-69c6513923964ce3a43e40d0aefa40ac
Source dataset
uspto-grants-1991_08
Patent number
US05041679

Reaction notes

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