Methyl iodide → ethyl 1-(methoxymethyl)-4-methyl-7-[methyl(2-thienylsulfonyl)amino]-1H-indole-2-carboxylate

HRID 1960276Notes

Reaction equation

HRID 1960276 reaction equation
[CH3:1][O:2][CH2:3][N:4]1[C:12]2[C:7](=[C:8]([CH3:22])[CH:9]=[CH:10][C:11]=2[NH:13][S:14]([C:17]2[S:18][CH:19]=[CH:20][CH:21]=2)(=[O:16])=[O:15])[CH:6]=[C:5]1[C:23]([O:25][CH2:26][CH3:27])=[O:24].CI.[C:30](=O)([O-])[O-].[K+].[K+]>CN(C)C=O>[CH3:1][O:2][CH2:3][N:4]1[C:12]2[C:7](=[C:8]([CH3:22])[CH:9]=[CH:10][C:11]=2[N:13]([CH3:30])[S:14]([C:17]2[S:18][CH:19]=[CH:20][CH:21]=2)(=[O:16])=[O:15])[CH:6]=[C:5]1[C:23]([O:25][CH2:26][CH3:27])=[O:24]

Participants

5

Reactant 3

HCID 6328Methyl iodideHCID 11430Potassium CarbonateHCID 57476001ethyl 1-(methoxymethyl)-4-methyl-7-[(2-thienylsulfonyl)amino]-1H-indole-2-carboxylate

Product 1

HCID 57476005ethyl 1-(methoxymethyl)-4-methyl-7-[methyl(2-thienylsulfonyl)amino]-1H-indole-2-carboxylateYield 85%

Reagents, catalysts & solvents 1

HCID 6228DimethylformamideSolvent

Procedure

A mixture of ethyl 1-(methoxymethyl)-4-methyl-7-[(2-thienylsulfonyl)amino]-1H-indole-2-carboxylate (7.8 g), methyl iodide (1.7 ml), potassium carbonate (2.9 g) and N,N-dimethylformamide (14 ml) was stirred at room temperature for 18 hr. The reaction solution was concentrated under reduced pressure, and the obtained residue was diluted with ethyl acetate. The mixture was washed with aqueous citric acid solution, water and saturated brine,*dried over anhydrous magnesium sulfate, and concentrated under reduced pressure. The obtained colorless crystals were washed with diethyl ether-hexane to give the title compound (6.85 g, yield 85%) as colorless needle crystals.

Workup

  1. concentrationThe reaction solution was concentrated under reduced pressure
  2. additionthe obtained residue was diluted with ethyl acetate
  3. washThe mixture was washed with aqueous citric acid solution, water and saturated brine
  4. concentrationconcentrated under reduced pressure
  5. washThe obtained colorless crystals were washed with diethyl ether-hexane

Sources & evidence

ORD record
ord-29dd8841834c44c382b23525f2580f0d
Source dataset
uspto-grants-2013_04
Patent number
US08410087B2

Reaction notes

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