Sodium hydride → HCID 69451957, compound

HRID 2205413Notes

Reaction equation

HRID 2205413 reaction equation
[CH3:1][O:2][C:3]([C:5]1[CH:13]=[C:12]2[C:8]([CH:9]=[CH:10][NH:11]2)=[CH:7][CH:6]=1)=[O:4].[CH3:14][O:15][C:16]1[CH:23]=[CH:22][C:19]([CH2:20]Br)=[CH:18][CH:17]=1.[H-].[Na+]>CN(C=O)C.O.C(OCC)(=O)C>[CH3:1][O:2][C:3]([C:5]1[CH:13]=[C:12]2[C:8]([CH:9]=[CH:10][N:11]2[CH2:20][C:19]2[CH:22]=[CH:23][C:16]([O:15][CH3:14])=[CH:17][CH:18]=2)=[CH:7][CH:6]=1)=[O:4]

Participants

7

Reactant 3

HCID 24758Sodium hydrideHCID 1650214-Methoxybenzyl bromideHCID 639844Methyl indole-6-carboxylate

Product 1

HCID 69451957HCID 69451957, compoundYield 54.2%

Reagents, catalysts & solvents 3

HCID 962WaterSolventHCID 6228DimethylformamideSolventHCID 8857Ethyl AcetateSolvent

Procedure

To a solution of commercially available 1H-indole-6-carboxylic acid methyl ester (0.35 g, 2.0 mmol) and 4-methoxybenzyl bromide (0.32 mL, 2.2 mmol) in DMF (2 mL) was added sodium hydride (92 mg, 2.3 mmol). After stirring at room temperature for 3.5 hr, the solution was diluted with water (25 mL) and ethyl acetate (75 mL), the organic layer was washed again with dilute NaHCO3 (25 mL) and then brine (25 mL). The organic layer was dried over Na2SO4, filtered and concentrated. The remaining residue was subjected to flash chromatography (ethyl acetate/hexane, 1:5) to provide 1-(4-methoxy-phenylmethyl)-1H-indole-6-carboxylic acid methyl ester as a white solid (0.32 g, 54% yield). 1H NMR (400 MHz, DMSO) δ 8.10 (s, 1H), 7.73 (d, 1H, J=3.4 Hz), 7.64 (m, 2H), 7.14 (d, 2H, J=9.0 Hz), 6.88 (d, 2H, J=9.0 Hz), 6.58 (d, 1H, J=3.4 Hz), 5.45 (s, 2H), 3.83 (s, 3H), 3.70 (s, 3H).

Workup

  1. washthe organic layer was washed again with dilute NaHCO3 (25 mL)
  2. dry with materialThe organic layer was dried over Na2SO4
  3. filtrationfiltered
  4. concentrationconcentrated

Sources & evidence

ORD record
ord-4976e98b45d243b68b5783c3b84745f1
Source dataset
uspto-grants-2016_06
Patent number
US09371281B2

Reaction notes

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