Potassium Carbonate → HCID 58213799, compound

HRID 2195731Notes

Reaction equation

HRID 2195731 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].[N+:14]([C:17]1[CH:18]=[C:19]([CH:22]=[CH:23][CH:24]=1)[CH2:20]Br)([O-:16])=[O:15].C([O-])([O-])=O.[K+].[K+]>CN(C=O)C.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][CH:24]=[C:17]([N+:14]([O-:16])=[O:15])[CH:18]=2)=[CH:7][CH:6]=1)=[O:4]

Participants

6

Reactant 3

HCID 11430Potassium CarbonateHCID 77568Benzene, 1-(bromomethyl)-3-nitro-HCID 639844Methyl indole-6-carboxylate

Product 1

HCID 58213799HCID 58213799, compoundYield 76%

Reagents, catalysts & solvents 2

HCID 6228DimethylformamideSolventHCID 8857Ethyl AcetateSolvent

Procedure

To a solution of 1H-indole-6-carboxylic acid methyl ester (1.0 g, 5.7 mmol) and 3-nitrobenzyl bromide (1.48 g, 6.8 mmol) in DMF (15 mL) was added K2CO3 (1.6 g, 11.4 mmol). After stirring at room temperature for 16 hr, the solution was diluted with ethyl acetate (100 ml) and washed with water (3×50 ml). The organic layer was dried (MgSO4), filtered and concentrated. The remaining residue was recrystallized with ethyl acetate/hexane to provide 1.34 g (76% yield) of 1-(3-nitrobenzyl)-1H-indole-6-carboxylic acid methyl ester as light orange crystals. 1H NMR (300 MHz, DMSO) δ 8.13 (m, 2H), 8.03 (s, 1H), 7.81 (d, 1H, J=3.0 Hz), 7.67-7.54 (m, 4H, J=9.0 Hz), 6.65 (d, 1H, J=3.0 Hz), 5.73 (s, 2H), 3.81 (s, 3H).

Workup

  1. washwashed with water (3×50 ml)
  2. dry with materialThe organic layer was dried (MgSO4)
  3. filtrationfiltered
  4. concentrationconcentrated
  5. customThe remaining residue was recrystallized with ethyl acetate/hexane

Sources & evidence

ORD record
ord-7486ce6443074fdb8560cbe0225f9e0d
Source dataset
uspto-grants-2012_12
Patent number
US08338416B2

Reaction notes

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