Benzyl Bromide → HCID 57519010, compound

HRID 1785345Notes

Reaction equation

HRID 1785345 reaction equation
[CH2:1](Br)[C:2]1[CH:7]=[CH:6][CH:5]=[CH:4][CH:3]=1.[C:9]([O:13][C:14]([N:16]([CH:18]([C:25]1[CH:30]=[CH:29][C:28]([OH:31])=[CH:27][CH:26]=1)[CH2:19][C:20]([O:22][CH2:23][CH3:24])=[O:21])[CH3:17])=[O:15])([CH3:12])([CH3:11])[CH3:10].C(=O)([O-])[O-].[K+].[K+]>CN(C)C=O>[CH2:1]([O:31][C:28]1[CH:29]=[CH:30][C:25]([CH:18]([N:16]([C:14]([O:13][C:9]([CH3:10])([CH3:12])[CH3:11])=[O:15])[CH3:17])[CH2:19][C:20]([O:22][CH2:23][CH3:24])=[O:21])=[CH:26][CH:27]=1)[C:2]1[CH:7]=[CH:6][CH:5]=[CH:4][CH:3]=1

Participants

5

Reactant 3

HCID 7498Benzyl BromideHCID 11430Potassium CarbonateHCID 57518847HCID 57518847, compound

Product 1

HCID 57519010HCID 57519010, compoundYield 84.2%

Reagents, catalysts & solvents 1

HCID 6228DimethylformamideSolvent

Procedure

N,N-Dimethylformamide and benzyl bromide (2.3 ml, 19 mmol) were added sequentially to ethyl 3-[N-(t-butoxy carbonyl)-N-methylamino]-3-(4-hydroxyphenyl)propionate (5.10 g, 16 mmol) obtained from Example 16a and potassium carbonate (3.27 g, 24 mmol) and the mixture was stirred at room temperature for 4 hours. The reaction mixture was partitioned between water and ethyl acetate. The organic layer was washed with water and saturated aqueous sodium chloride solution, dried over anhydrous magnesium sulfate and concentrated under reduced pressure. The residue was purified by chromatography on a silica gel column to afford the desired compound (5.57 g).

Workup

  1. customThe reaction mixture was partitioned between water and ethyl acetate
  2. washThe organic layer was washed with water and saturated aqueous sodium chloride solution
  3. dry with materialdried over anhydrous magnesium sulfate
  4. concentrationconcentrated under reduced pressure
  5. customThe residue was purified by chromatography on a silica gel column

Sources & evidence

ORD record
ord-09cd046db230433b8368956f66f69cbd
Source dataset
uspto-grants-2009_03
Patent number
US07504437B2

Reaction notes

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