N-bromobutanimide → 2-Bromomethyl-4-(2-fluoro-4-methylphenylamino)-1,5-dimethyl-6-oxo-1,6-dihydropyridine-3-carboxylic acid ethyl ester

HRID 422783Notes

Reaction equation

HRID 422783 reaction equation
[CH2:1]([O:3][C:4]([C:6]1[C:11]([NH:12][C:13]2[CH:18]=[CH:17][C:16]([CH3:19])=[CH:15][C:14]=2[F:20])=[C:10]([CH3:21])[C:9](=[O:22])[N:8]([CH3:23])[C:7]=1[CH3:24])=[O:5])[CH3:2].[Br:25]N1C(=O)CCC1=O>CN(C=O)C.CCOC(C)=O>[CH2:1]([O:3][C:4]([C:6]1[C:11]([NH:12][C:13]2[CH:18]=[CH:17][C:16]([CH3:19])=[CH:15][C:14]=2[F:20])=[C:10]([CH3:21])[C:9](=[O:22])[N:8]([CH3:23])[C:7]=1[CH2:24][Br:25])=[O:5])[CH3:2]

Participants

5

Reactant 2

HCID 67184N-bromobutanimideHCID 666746314-(2-Fluoro-4-methylphenylamino)-1,2,5-trimethyl-6-oxo-1,6-dihydropyridine-3-carboxylic acid ethyl ester

Product 1

HCID 666734472-Bromomethyl-4-(2-fluoro-4-methylphenylamino)-1,5-dimethyl-6-oxo-1,6-dihydropyridine-3-carboxylic acid ethyl esterYield 66%

Reagents, catalysts & solvents 2

HCID 6228DimethylformamideSolventHCID 8857Ethyl AcetateSolvent

Procedure

To a solution of 4-(2-fluoro-4-methylphenylamino)-1,2,5-trimethyl-6-oxo-1,6-dihydropyridine-3-carboxylic acid ethyl ester (0.150 g, 0.451 mmol) in DMF (5 mL) was added N-bromosuccinimide (0.084 g, 0.474 mmol). After stirring for 30 minutes, the reaction mixture was diluted with EtOAc, washed with water and brine, dried (Na2SO4) and concentrated under reduced pressure to yield a yellow residue. Purification by flash column chromatography (methylene chloride) gave 0.122 g (66%) of a yellow residue.

Workup

  1. washwashed with water and brine
  2. dry with materialdried (Na2SO4)
  3. concentrationconcentrated under reduced pressure
  4. customto yield a yellow residue
  5. customPurification by flash column chromatography (methylene chloride)

Sources & evidence

ORD record
ord-cd6f24dbfcb247c88073987aab477da3
Source dataset
uspto-grants-2012_01
Patent number
US08101639B2

Reaction notes

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