Water → HCID 117770455, compound

HRID 1526403Notes

Reaction equation

HRID 1526403 reaction equation
[Cl:1][C:2]1[CH:7]=[CH:6][N:5]([C@H:8]([CH:10]([CH3:12])[CH3:11])[CH3:9])[C:4](=[O:13])[C:3]=1[C:14]#[N:15].[Br:16]N1C(=O)CCC1=O.O>CN(C)C=O>[Br:16][C:7]1[C:2]([Cl:1])=[C:3]([C:14]#[N:15])[C:4](=[O:13])[N:5]([C@H:8]([CH:10]([CH3:11])[CH3:12])[CH3:9])[CH:6]=1

Participants

5

Reactant 3

HCID 962WaterHCID 67184N-bromobutanimideHCID 117770334HCID 117770334, compound

Product 1

HCID 117770455HCID 117770455, compoundYield 97.3%

Reagents, catalysts & solvents 1

HCID 6228DimethylformamideSolvent

Conditions

Temperature
50 °C

Procedure

To a solution of 4-chloro-1-((2S)-3-methylbutan-2-yl)-2-oxo-1,2-dihydropyridine-3-carbonitrile obtained in Step E (14.6 g) in N,N-dimethylformamide (120 mL) was added N-bromosuccinimide (17.4 g), and the mixture was stirred at 50° C. for 20 hr. To the reaction mixture was added water, and the mixture was extracted with ethyl acetate. The obtained organic layer was washed successively with water and saturated brine, and dried over anhydrous magnesium sulfate, and the solvent was evaporated under reduced pressure. The residue was purified by silica gel column chromatography (hexane/ethyl acetate) to give the title compound (19.2 g).

Workup

  1. extractionthe mixture was extracted with ethyl acetate
  2. washThe obtained organic layer was washed successively with water and saturated brine
  3. dry with materialdried over anhydrous magnesium sulfate
  4. customthe solvent was evaporated under reduced pressure
  5. customThe residue was purified by silica gel column chromatography (hexane/ethyl acetate)

Sources & evidence

ORD record
ord-118ad9ff9660469eb8166d8e5703623a
Source dataset
uspto-grants-2015_07
Patent number
US09085578B2

Reaction notes

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