Methyl iodide → 3-Bromo-4-[(2,4-difluorobenzyl)oxy]-1-{[5-(methoxymethyl)pyrazin-2-yl]methyl}-6-methylpyridin-2(1H)-one

HRID 1832007Notes

Reaction equation

HRID 1832007 reaction equation
[Br:1][C:2]1[C:3](=[O:28])[N:4]([CH2:19][C:20]2[CH:25]=[N:24][C:23]([CH2:26][OH:27])=[CH:22][N:21]=2)[C:5]([CH3:18])=[CH:6][C:7]=1[O:8][CH2:9][C:10]1[CH:15]=[CH:14][C:13]([F:16])=[CH:12][C:11]=1[F:17].[H-].[Na+].I[CH3:32]>CN(C=O)C>[Br:1][C:2]1[C:3](=[O:28])[N:4]([CH2:19][C:20]2[CH:25]=[N:24][C:23]([CH2:26][O:27][CH3:32])=[CH:22][N:21]=2)[C:5]([CH3:18])=[CH:6][C:7]=1[O:8][CH2:9][C:10]1[CH:15]=[CH:14][C:13]([F:16])=[CH:12][C:11]=1[F:17]

Participants

5

Reactant 3

HCID 6328Methyl iodideHCID 24758Sodium hydrideHCID 220506073-Bromo-4-[(2,4-difluorobenzyl)oxy]-1-{[5-(hydroxymethyl)pyrazin-2-yl]methyl}-6-methylpyridin-2(1H)-one

Product 1

HCID 220501353-Bromo-4-[(2,4-difluorobenzyl)oxy]-1-{[5-(methoxymethyl)pyrazin-2-yl]methyl}-6-methylpyridin-2(1H)-one

Reagents, catalysts & solvents 1

HCID 6228DimethylformamideSolvent

Procedure

To a solution of 3-Bromo-4-[(2,4-difluorobenzyl)oxy]-1-{[5-(hydroxymethyl)pyrazin-2-yl]methyl}-6-methylpyridin-2(1H)-one (0.35 g, 0.00078 mol) in DMF at 0° C., was added NaH (0.022 g, 0.00092 mol) and stirred for 10 min. Iodomethane (0.05 mL) was added to the reaction and the mixture was stirred at 10° C. for 3 h. DMF was distilled in vacuo and the residue was partitioned between 5% citric acid and EtOAc (15.0 mL). The organic phase was washed with water, dried (Na2SO4) and concentrated to dryness. The residue was purified by flash chromatography (EtOAc), and the appropriate fractions were combined and concentrated to a pale yellow powder.

Workup

  1. stirringthe mixture was stirred at 10° C. for 3 h
  2. distillationDMF was distilled in vacuo
  3. customthe residue was partitioned between 5% citric acid and EtOAc (15.0 mL)
  4. washThe organic phase was washed with water
  5. dry with materialdried (Na2SO4)
  6. concentrationconcentrated to dryness
  7. customThe residue was purified by flash chromatography (EtOAc)
  8. concentrationconcentrated to a pale yellow powder

Sources & evidence

ORD record
ord-cead6cda54da4055b9fd00e06a3e8f3b
Source dataset
uspto-grants-2006_06
Patent number
US07067540B2

Reaction notes

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