Iodoethane → (S)-ethyl 2-(5-bromo-2,7-dimethylquinolin-6-yl)-2-tert-butoxyacetate

HRID 2207036Notes

Reaction equation

HRID 2207036 reaction equation
[Br:1][C:2]1[C:11]([C@H:12]([O:16][C:17]([CH3:20])([CH3:19])[CH3:18])[C:13]([OH:15])=[O:14])=[C:10]([CH3:21])[CH:9]=[C:8]2[C:3]=1[CH:4]=[CH:5][C:6]([CH3:22])=[N:7]2.C([O-])([O-])=O.[Cs+].[Cs+].I[CH2:30][CH3:31]>CN(C=O)C.O>[Br:1][C:2]1[C:11]([C@H:12]([O:16][C:17]([CH3:18])([CH3:19])[CH3:20])[C:13]([O:15][CH2:30][CH3:31])=[O:14])=[C:10]([CH3:21])[CH:9]=[C:8]2[C:3]=1[CH:4]=[CH:5][C:6]([CH3:22])=[N:7]2

Participants

6

Reactant 3

HCID 6340IodoethaneHCID 10796Cesium carbonateHCID 66631643(S)-2-(5-bromo-2,7-dimethylquinolin-6-yl)-2-tert-butoxyacetic acid

Product 1

HCID 68586165(S)-ethyl 2-(5-bromo-2,7-dimethylquinolin-6-yl)-2-tert-butoxyacetate

Reagents, catalysts & solvents 2

HCID 962WaterSolventHCID 6228DimethylformamideSolvent

Procedure

To a stirred solution of (S)-2-(5-bromo-2,7-dimethylquinolin-6-yl)-2-tert-butoxyacetic acid (17 g, 46.6 mmol) in DMF (200 mL) was added Cs2CO3 (30.4 g, 93.2 mmol), followed with the addition of iodoethane (11 g, 69.9 mmol) at room temperature. The mixture was stirred at room temperature for 2 hours, diluted with water. The mixture was extracted with ethyl acetate. The organic layer was washed with brine, dried and concentrated in vacuo. The obtained residue was purified by flash chromatography to provide the desired product. LCMS-ESI+: calc'd for C19H24BrNO3: 394.1 (M+H+); Found: 394.0 (M+H+).

Workup

  1. extractionThe mixture was extracted with ethyl acetate
  2. washThe organic layer was washed with brine
  3. customdried
  4. concentrationconcentrated in vacuo
  5. customThe obtained residue was purified by flash chromatography

Sources & evidence

ORD record
ord-365bb98495684c809da1b78c4849516f
Source dataset
uspto-grants-2016_06
Patent number
US09376392B2

Reaction notes

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