Dimethylformamide → ethyl 6-chloro-7-[methyl(2-thienylsulfonyl)amino]-1H-indole-2-carboxylate

HRID 1994727Notes

Reaction equation

HRID 1994727 reaction equation
[Cl:1][C:2]1[C:10]([NH:11][S:12]([C:15]2[S:16][CH:17]=[CH:18][CH:19]=2)(=[O:14])=[O:13])=[C:9]2[C:5]([CH:6]=[C:7]([C:20]([O:22][CH2:23][CH3:24])=[O:21])[NH:8]2)=[CH:4][CH:3]=1.CI.[C:27](=O)([O-])[O-].[K+].[K+].CN(C)C=O>O>[Cl:1][C:2]1[C:10]([N:11]([CH3:27])[S:12]([C:15]2[S:16][CH:17]=[CH:18][CH:19]=2)(=[O:14])=[O:13])=[C:9]2[C:5]([CH:6]=[C:7]([C:20]([O:22][CH2:23][CH3:24])=[O:21])[NH:8]2)=[CH:4][CH:3]=1

Participants

6

Reactant 4

HCID 6228DimethylformamideHCID 6328Methyl iodideHCID 11430Potassium CarbonateHCID 57476027ethyl 6-chloro-7-[(2-thienylsulfonyl)amino]-1H-indole-2-carboxylate

Product 1

HCID 57476030ethyl 6-chloro-7-[methyl(2-thienylsulfonyl)amino]-1H-indole-2-carboxylateYield 77.2%

Reagents, catalysts & solvents 1

HCID 962WaterSolvent

Procedure

A mixture of ethyl 6-chloro-7-[(2-thienylsulfonyl)amino]-1H-indole-2-carboxylate (1.00 g), methyl iodide (0.17 ml), potassium carbonate (0.36 g) and N,N-dimethylformamide (10 ml) was stirred overnight at room temperature. Water was added to the reaction mixture, and the resulting crystals were collected by filtration, washed with water, and dried. The obtained crystals were subjected to basic silica gel column chromatography to give the title compound (0.80 g, yield 77%) as colorless crystals from a fraction eluted with ethyl acetate-hexane (1:2, volume ratio). melting point 156-157° C.

Workup

  1. filtrationthe resulting crystals were collected by filtration
  2. washwashed with water
  3. customdried

Sources & evidence

ORD record
ord-fa7e2d0a4ba24ce286b18e4157069983
Source dataset
uspto-grants-2010_01
Patent number
US07652133B2

Reaction notes

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