Potassium Carbonate → 5-(2-Pyridin-4-ylfuran-3-yl)indan-1-one O-methyl oxime

HRID 271510Notes

Reaction equation

HRID 271510 reaction equation
Br[C:2]1[CH:6]=[CH:5][O:4][C:3]=1[C:7]1[CH:12]=[CH:11][N:10]=[CH:9][CH:8]=1.[CH3:13][O:14][N:15]=[C:16]1[C:24]2[C:19](=[CH:20][C:21](B(O)O)=[CH:22][CH:23]=2)[CH2:18][CH2:17]1.C(=O)([O-])[O-].[K+].[K+].C1(P(C2C=CC=CC=2)C2C=CC=CC=2)C=CC=CC=1>COCCOC.O.C([O-])(=O)C.[Pd+2].C([O-])(=O)C>[CH3:13][O:14][N:15]=[C:16]1[C:24]2[C:19](=[CH:20][C:21]([C:2]3[CH:6]=[CH:5][O:4][C:3]=3[C:7]3[CH:12]=[CH:11][N:10]=[CH:9][CH:8]=3)=[CH:22][CH:23]=2)[CH2:18][CH2:17]1

Participants

8

Reactant 4

HCID 11430Potassium CarbonateHCID 11776TriphenylphosphineHCID 157218314-(3-Bromo-furan-2-yl)-pyridineHCID 734146811-Methoxyimino-indan-5-boronic acid

Product 1

HCID 865954135-(2-Pyridin-4-ylfuran-3-yl)indan-1-one O-methyl oximeYield 79.4%

Reagents, catalysts & solvents 3

HCID 167845palladium(II) acetateCatalystHCID 962WaterSolventHCID 80711,2-DimethoxyethaneSolvent

Procedure

A degassed mixture of the product of Step 3 (2.7 g, 12 mmol), the product of Step 2 (2.5 g, 12 mmol) and potassium carbonate (13.2 g, 96 mmol) in ethylene glycol dimethyl ether (70 ml) and water (30 ml) was treated with triphenylphosphine (314 mg, 1.2 mmol) and palladium acetate (135 mg, 0.6 mmol), then heated under reflux for 1 hour. After cooling to room temperature, the mixture was filtered through filter aid and the filtrate diluted with water and ethyl acetate. The organic phase was separated, washed with water and brine, dried, concentrated in vacuo and the residue purified by silica gel chromatography to give the title compound (2.9 g, 74%); MS(ES+) m/e 305 [M+H]+.

Workup

  1. temperatureheated
  2. temperatureunder reflux for 1 hour
  3. filtrationthe mixture was filtered
  4. filtrationthrough filter aid
  5. additionthe filtrate diluted with water and ethyl acetate
  6. customThe organic phase was separated
  7. washwashed with water and brine
  8. customdried
  9. concentrationconcentrated in vacuo
  10. customthe residue purified by silica gel chromatography

Sources & evidence

ORD record
ord-4ce08cfbfb2647d0a6b5584375faaf5a
Source dataset
uspto-grants-2008_11
Patent number
US07452906B2

Reaction notes

Loading…