2-Methylbenzenesulfonamide → N-[1-(3-nitrobenzyl)indol-5-ylcarbonyl]-2-methylbenzene sulphonamide

HRID 2081699Notes

Reaction equation

HRID 2081699 reaction equation
[N+:1]([C:4]1[CH:5]=[C:6]([CH:20]=[CH:21][CH:22]=1)[CH2:7][N:8]1[C:16]2[C:11](=[CH:12][C:13]([C:17]([OH:19])=O)=[CH:14][CH:15]=2)[CH:10]=[CH:9]1)([O-:3])=[O:2].[CH3:23][C:24]1[CH:29]=[CH:28][CH:27]=[CH:26][C:25]=1[S:30]([NH2:33])(=[O:32])=[O:31].Cl.CN(C)CCCN=C=NCC>ClCCl.CN(C)C1C=CN=CC=1>[N+:1]([C:4]1[CH:5]=[C:6]([CH:20]=[CH:21][CH:22]=1)[CH2:7][N:8]1[C:16]2[C:11](=[CH:12][C:13]([C:17]([NH:33][S:30]([C:25]3[CH:26]=[CH:27][CH:28]=[CH:29][C:24]=3[CH3:23])(=[O:31])=[O:32])=[O:19])=[CH:14][CH:15]=2)[CH:10]=[CH:9]1)([O-:3])=[O:2]

Participants

6

Reactant 3

HCID 69242-MethylbenzenesulfonamideHCID 27239391,3-Propanediamine, N'-(ethylcarbonimidoyl)-N,N-dimethyl-, monohydrochlorideHCID 197804001-(3-Nitrobenzyl)indole-5-carboxylic acid

Product 1

HCID 19780401N-[1-(3-nitrobenzyl)indol-5-ylcarbonyl]-2-methylbenzene sulphonamide

Reagents, catalysts & solvents 2

HCID 142844-(Dimethylamino)pyridineCatalystHCID 6344DichloromethaneSolvent2×

Procedure

The carboxylic acid (Example 2) (6.2 g) was stirred at room temperature in dichloromethane (50 ml) with 2-methylbenzene sulphonamide (3.4 g), 1-(3-dimethylaminopropyl)-3-ethylcarbodiimide hydrochloride (4.6 g) and 4-dimethylaminopyridine (0.25 g) for 72 hours. The reaction mixture was diluted with dichloromethane and washed with 0.5N hydrochloric acid, then water. The organic extract was dried over anhydrous magnesium sulphate, filtered and evaporated in vacuo. Purification by flash chromatography on silica, eluting with 0-2% ethyl acetate in dichloromethane, afforded N-[1-(3-nitrobenzyl)indol-5-ylcarbonyl]-2-methylbenzene sulphonamide (m.p. 208°-210° C.).

Workup

  1. washwashed with 0.5N hydrochloric acid
  2. extractionThe organic extract
  3. dry with materialwas dried over anhydrous magnesium sulphate
  4. filtrationfiltered
  5. customevaporated in vacuo
  6. customPurification by flash chromatography on silica
  7. washeluting with 0-2% ethyl acetate in dichloromethane

Sources & evidence

ORD record
ord-8df1e7b3eceb4c2f97c3218778cb9624
Source dataset
uspto-grants-1993_02
Patent number
US05185361

Reaction notes

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