Benzyl Bromide → Ethyl1-Benzyl-3-formyl-2-isopropyl-1H-indole-6-carboxylate

HRID 40061Notes

Reaction equation

HRID 40061 reaction equation
[CH2:1]([O:3][C:4]([C:6]1[CH:14]=[C:13]2[C:9]([C:10]([CH:18]=[O:19])=[C:11]([CH:15]([CH3:17])[CH3:16])[NH:12]2)=[CH:8][CH:7]=1)=[O:5])[CH3:2].C([O-])([O-])=O.[K+].[K+].[CH2:26](Br)[C:27]1[CH:32]=[CH:31][CH:30]=[CH:29][CH:28]=1>CN(C=O)C.CCOC(C)=O>[CH2:26]([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]([CH:18]=[O:19])=[C:11]1[CH:15]([CH3:16])[CH3:17])[C:27]1[CH:32]=[CH:31][CH:30]=[CH:29][CH:28]=1

Participants

6

Reactant 3

HCID 7498Benzyl BromideHCID 11430Potassium CarbonateHCID 59762423Ethyl3-Formyl-2-isopropyl-1H-indole-6-carboxylate2×

Product 1

HCID 59762439Ethyl1-Benzyl-3-formyl-2-isopropyl-1H-indole-6-carboxylate

Reagents, catalysts & solvents 2

HCID 6228DimethylformamideSolventHCID 8857Ethyl AcetateSolvent

Procedure

General Procedure C. To a solution of ethyl3-formyl-2-isopropyl-1H-indole-6-carboxylate (Compound 34, 2.08 g, 8.04 mmol) in DMF (15 ml) was added K2CO3 (3.32 g, 24.1 mmol) and benzyl bromide (1.91 ml, 16.1 mmol). The reaction was stirred at room temperature for 12 h, diluted with EtOAc, washed with H2O, brine, dried over Na2SO4 and concentrated in vacuo. The residue was purified by chromatography on silica gel (0→35% EtOAc-hexanes) to yield the title compound as a yellow oil.

Workup

  1. washwashed with H2O, brine
  2. dry with materialdried over Na2SO4
  3. concentrationconcentrated in vacuo
  4. customThe residue was purified by chromatography on silica gel (0→35% EtOAc-hexanes)

Sources & evidence

ORD record
ord-c247067584fa4437babf8edaa82225a9
Source dataset
uspto-grants-2013_09
Patent number
US08524917B2

Reaction notes

Loading…