Methanol → 6-(Methoxycarbonylphenylthio)-6-tert.butyloxycarbonylhexanoic acid methyl ester

HRID 467341Notes

Reaction equation

HRID 467341 reaction equation
COC([C:5]1[CH:10]=[CH:9][C:8]([S:11][C:12]2([C:19]([O:21][C:22]([CH3:25])([CH3:24])[CH3:23])=[O:20])[CH2:17][CH2:16][CH2:15][CH2:14][C:13]2=[O:18])=[CH:7][CH:6]=1)=O.[CH3:26][OH:27]>C(OCC)(=O)C>[CH3:26][O:27][C:13](=[O:18])[CH2:14][CH2:15][CH2:16][CH2:17][CH:12]([S:11][C:8]1[CH:7]=[CH:6][CH:5]=[CH:10][C:9]=1[C:19]([O:21][CH3:22])=[O:20])[C:19]([O:21][C:22]([CH3:23])([CH3:24])[CH3:25])=[O:20]

Participants

4

Reactant 2

HCID 887MethanolHCID 197556512-(4-Methoxycarbonylphenylthio)-2-tert.butoxycarbonylcyclohexanone

Product 1

HCID 572766676-(Methoxycarbonylphenylthio)-6-tert.butyloxycarbonylhexanoic acid methyl ester

Reagents, catalysts & solvents 1

HCID 8857Ethyl AcetateSolvent

Procedure

1 g (30.2 mmol) of 2-(4-methoxycarbonylphenylthio)-2-tert.butoxycarbonylcyclohexanone is dissolved, together with 0.37 g (3.3 mmol) of potassium tert.butylate, in 100 ml of methanol of reagent purity and the solutions is left to stand for 2 hours at room temperature. It is then diluted with 500 ml of ethyl acetate and the organic phase is washed with water and a saturated sodium chloride solution, dried with sodium sulphate and concentrated by evaporation. After drying in a high vacuum 11.3 g of an oily product are obtained, which is sufficiently pure to be used for further reactions.

Workup

  1. waitthe solutions is left
  2. washthe organic phase is washed with water
  3. dry with materiala saturated sodium chloride solution, dried with sodium sulphate
  4. concentrationconcentrated by evaporation
  5. dry with materialAfter drying in a high vacuum 11.3 g of an oily product
  6. customare obtained

Sources & evidence

ORD record
ord-4f4271358b28496a88475d1fb18a5b85
Source dataset
uspto-grants-1992_10
Patent number
US05159097

Reaction notes

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