Water → HCID 57815481, compound

HRID 1510709Notes

Reaction equation

HRID 1510709 reaction equation
FC(F)(F)S(O[C:7]1[C:12](=[O:13])[CH:11]=[C:10]([CH2:14][O:15][CH:16]2[CH2:21][CH2:20][CH2:19][CH2:18][O:17]2)[O:9][CH:8]=1)(=O)=O.[C:24](=O)([O-])[O-].[K+].[K+].CB1OB(C)OB(C)O1.O>O1CCOCC1.C1C=CC([P]([Pd]([P](C2C=CC=CC=2)(C2C=CC=CC=2)C2C=CC=CC=2)([P](C2C=CC=CC=2)(C2C=CC=CC=2)C2C=CC=CC=2)[P](C2C=CC=CC=2)(C2C=CC=CC=2)C2C=CC=CC=2)(C2C=CC=CC=2)C2C=CC=CC=2)=CC=1.C(OCC)(=O)C>[CH3:24][C:7]1[C:12](=[O:13])[CH:11]=[C:10]([CH2:14][O:15][CH:16]2[CH2:21][CH2:20][CH2:19][CH2:18][O:17]2)[O:9][CH:8]=1

Participants

8

Reactant 4

HCID 962WaterHCID 11430Potassium CarbonateHCID 574072TrimethylboroxineHCID 57815270HCID 57815270, compound

Product 1

HCID 57815481HCID 57815481, compoundYield 99.1%

Reagents, catalysts & solvents 3

HCID 178418397HCID 178418397, compoundCatalystHCID 8857Ethyl AcetateSolventHCID 312751,4-DioxaneSolvent

Conditions

Temperature
75 °C

Procedure

To a solution of 1.0 g of 4-oxo-6-((tetrahydro-2H-pyran-2-yloxy)methyl)-4H-pyran-3-yl trifluoromethanesulfonate in 10 mL of dioxane, 1.2 g of potassium carbonate, 0.4 mL of trimethylboroxin and 0.33 g of tetrakis(triphenylphosphine)palladium(0) were added, and the mixture was stirred at 70 to 80° C. for 2 hours under an argon atmosphere. After cooling to room temperature, water and ethyl acetate were added to the reaction mixture, and the organic layer was separated. The aqueous layer was extracted with ethyl acetate, the organic layer and the extract were combined, the resultant solution was dried over anhydrous magnesium sulfate, and the solvent was distilled off under reduced pressure. The resultant residue was purified by silica gel column chromatography using an eluent of hexane:ethyl acetate=1:1 to obtain 0.62 g of 5-methyl-2-((tetrahydro-2H-pyran-2-yloxy)methyl)-4H-pyran-4-one as a brown oily substance.

Workup

  1. temperatureAfter cooling to room temperature
  2. customthe organic layer was separated
  3. extractionThe aqueous layer was extracted with ethyl acetate
  4. dry with materialthe resultant solution was dried over anhydrous magnesium sulfate
  5. distillationthe solvent was distilled off under reduced pressure
  6. customThe resultant residue was purified by silica gel column chromatography

Sources & evidence

ORD record
ord-7339f9d5f1e246338e0fdf3b60ceb3ee
Source dataset
uspto-grants-2012_07
Patent number
US08211908B2

Reaction notes

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