Benzyl Bromide → Ethyl1-Benzyl-2-tert-butyl-3-(3,4-difluorobenzylcarbamoyl)-1H-indole-6-carboxylate

HRID 40115Notes

Reaction equation

HRID 40115 reaction equation
[CH2:1]([O:3][C:4]([C:6]1[CH:14]=[C:13]2[C:9]([C:10]([C:19](=[O:30])[NH:20][CH2:21][C:22]3[CH:27]=[CH:26][C:25]([F:28])=[C:24]([F:29])[CH:23]=3)=[C:11]([C:15]([CH3:18])([CH3:17])[CH3:16])[NH:12]2)=[CH:8][CH:7]=1)=[O:5])[CH3:2].[CH2:31](Br)[C:32]1[CH:37]=[CH:36][CH:35]=[CH:34][CH:33]=1.C([O-])([O-])=O.[K+].[K+]>CN(C=O)C.CCOC(C)=O>[CH2:31]([N:12]1[C:13]2[C:9](=[CH:8][CH:7]=[C:6]([C:4]([O:3][CH2:1][CH3:2])=[O:5])[CH:14]=2)[C:10]([C:19](=[O:30])[NH:20][CH2:21][C:22]2[CH:27]=[CH:26][C:25]([F:28])=[C:24]([F:29])[CH:23]=2)=[C:11]1[C:15]([CH3:18])([CH3:17])[CH3:16])[C:32]1[CH:37]=[CH:36][CH:35]=[CH:34][CH:33]=1

Participants

6

Reactant 3

HCID 7498Benzyl BromideHCID 11430Potassium CarbonateHCID 59762341Ethyl2-tert-Butyl-3-(3,4-difluorobenzylcarbamoyl)-1H-indole-6-carboxylate2×

Product 1

HCID 59762328Ethyl1-Benzyl-2-tert-butyl-3-(3,4-difluorobenzylcarbamoyl)-1H-indole-6-carboxylate

Reagents, catalysts & solvents 2

HCID 6228DimethylformamideSolventHCID 8857Ethyl AcetateSolvent

Procedure

To a solution of ethyl2-tert-butyl-3-(3,4-difluorobenzylcarbamoyl)-1H-indole-6-carboxylate (Compound 115, 33 mg, 0.080 mmol) in DMF (1 ml) was added benzyl bromide (47 μl, 0.40 mmol) and K2CO3 (33 mg, 0.24 mmol). The mixture was stirred at room temperature for 24 h, diluted with EtOAc, washed with H2O and brine, dried over Na2SO4, and concentrated in vacuo. The residue was purified by chromatography on silica gel (0→30% EtOAc-hexanes) followed by PTLC (5% MeOH—CH2Cl2) to yield the title compound.

Workup

  1. washwashed with H2O and brine
  2. dry with materialdried over Na2SO4
  3. concentrationconcentrated in vacuo
  4. customThe residue was purified by chromatography on silica gel (0→30% EtOAc-hexanes)

Sources & evidence

ORD record
ord-32ae3754bca94027a12c29c136f4dd5a
Source dataset
uspto-grants-2013_09
Patent number
US08524917B2

Reaction notes

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