1,2-Dimethoxyethane → 5-(3,5-Dimethylisoxazol-4-yl)-2-methylfuran-3-carbaldehyde

HRID 1877148Notes

Reaction equation

HRID 1877148 reaction equation
Br[C:2]1[O:6][C:5]([CH3:7])=[C:4]([CH:8]=[O:9])[CH:3]=1.[CH3:10][C:11]1[C:15](B(O)O)=[C:14]([CH3:19])[O:13][N:12]=1.C(=O)([O-])[O-].[Na+].[Na+].COCCOC>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.O>[CH3:10][C:11]1[C:15]([C:2]2[O:6][C:5]([CH3:7])=[C:4]([CH:8]=[O:9])[CH:3]=2)=[C:14]([CH3:19])[O:13][N:12]=1

Participants

7

Reactant 4

HCID 80711,2-DimethoxyethaneHCID 10340Sodium CarbonateHCID 27343463,5-Dimethylisoxazole-4-boronic acidHCID 469416735-Bromo-2-methylfuran-3-carbaldehyde

Product 1

HCID 866463845-(3,5-Dimethylisoxazol-4-yl)-2-methylfuran-3-carbaldehydeYield 69%

Reagents, catalysts & solvents 2

HCID 178418397HCID 178418397, compoundCatalystHCID 962WaterSolvent

Procedure

A mixture of 5-bromo-2-methylfuran-3-carbaldehyde (1.9 g), 3,5-dimethylisoxazole-4-boronic acid (1.7 g), tetrakis(triphenylphosphine)palladium(0) (0.6 g), 2N aqueous sodium carbonate solution (9 mL) and 1,2-dimethoxyethane (20 mL) was stirred overnight with refluxing under an argon atmosphere. The reaction mixture was poured into water, and the mixture was extracted with ethyl acetate. The organic layer was washed with saturated brine, and dried over magnesium sulfate. The solvent was evaporated under reduced pressure. The residue was purified by silica gel chromatography (0% ethyl acetate/hexane to 30% ethyl acetate/hexane), and crystallized from ethyl acetate/hexane to give the title compound (1.4 g, 69%) as a yellow crystal.

Workup

  1. temperaturewith refluxing under an argon atmosphere
  2. extractionthe mixture was extracted with ethyl acetate
  3. washThe organic layer was washed with saturated brine
  4. dry with materialdried over magnesium sulfate
  5. customThe solvent was evaporated under reduced pressure
  6. customThe residue was purified by silica gel chromatography (0% ethyl acetate/hexane to 30% ethyl acetate/hexane)
  7. customcrystallized from ethyl acetate/hexane

Sources & evidence

ORD record
ord-6f5ae90eceec4027b83d9dccf571bd95
Source dataset
uspto-grants-2012_11
Patent number
US08309580B2

Reaction notes

Loading…