m-Chloroperbenzoic acid → HCID 86745877, compound

HRID 1197062Notes

Reaction equation

HRID 1197062 reaction equation
[OH:1][CH:2]([CH2:26][CH2:27][CH2:28][OH:29])/[CH:3]=[CH:4]/[CH:5]=[C:6]1[C:10](=[O:11])[C:9]([S:12][CH3:13])=[CH:8][C:7]1([OH:25])[CH2:14][CH2:15][CH2:16][CH2:17][O:18][C:19]1[CH:24]=[CH:23][CH:22]=[CH:21][CH:20]=1.ClC1C=CC=C(C(OO)=[O:38])C=1.C(=O)([O-])O.[Na+]>ClCCl>[OH:1][CH:2]([CH2:26][CH2:27][CH2:28][OH:29])/[CH:3]=[CH:4]/[CH:5]=[C:6]1[C:10](=[O:11])[C:9]([S:12]([CH3:13])=[O:38])=[CH:8][C:7]1([OH:25])[CH2:14][CH2:15][CH2:16][CH2:17][O:18][C:19]1[CH:24]=[CH:23][CH:22]=[CH:21][CH:20]=1

Participants

5

Reactant 3

HCID 70297m-Chloroperbenzoic acidHCID 516892Sodium BicarbonateHCID 86745875HCID 86745875, compound

Product 1

HCID 86745877HCID 86745877, compoundYield 38%

Reagents, catalysts & solvents 1

HCID 6344DichloromethaneSolvent2×

Procedure

To a solution of 71 mg of 5-[(E)-4,7-dihydroxy-2-heptenylidene]-4-hydroxy-2-methylthio-4-(4-phenoxybutyl)-2-cyclopentenone obtained in Example 91 dissolved in 2 ml of dichloromethane was added a solution of 45 mg of 3-chloroperbenzoic acid in 2 ml of dichloromethane, and the mixture was stirred for 3 hours. Saturated aqueous sodium hydrogencarbonate was added. The mixture was extracted twice with ethyl acetate, and the organic layers were combined, washed with saturated aqueous sodium chloride and dried over anhydrous sodium sulfate. After filtration and concentration, the concentrate was subjected to silica gel column chromatography to give 27 mg (yield 38%) of low polarity isomer and 25 mg (yield 35%) of high polarity isomer of 5-[(E)-4,7-dihydroxyheptenylidene]-4-hydroxy-2-methylsulfinyl-4-(4-phenoxybutyl)-2-cyclopentenone.

Workup

  1. extractionThe mixture was extracted twice with ethyl acetate
  2. washwashed with saturated aqueous sodium chloride
  3. dry with materialdried over anhydrous sodium sulfate
  4. filtrationAfter filtration and concentration

Sources & evidence

ORD record
ord-041bae281abb425483d79c29cc3683f1
Source dataset
uspto-grants-1992_05
Patent number
US05116869

Reaction notes

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