Dimethylformamide → 7-[(2-thienylsulfonyl)amino]-5-(trifluoromethoxy)-1H-indole-2-carboxamide

HRID 1960374Notes

Reaction equation

HRID 1960374 reaction equation
[S:1]1[CH:5]=[CH:4][CH:3]=[C:2]1[S:6]([NH:9][C:10]1[CH:11]=[C:12]([O:22][C:23]([F:26])([F:25])[F:24])[CH:13]=[C:14]2[C:18]=1[NH:17][C:16]([C:19]([OH:21])=O)=[CH:15]2)(=[O:8])=[O:7].Cl.C[N:29](C)CCCN=C=NCC.CN(C)C=O>O>[S:1]1[CH:5]=[CH:4][CH:3]=[C:2]1[S:6]([NH:9][C:10]1[CH:11]=[C:12]([O:22][C:23]([F:25])([F:26])[F:24])[CH:13]=[C:14]2[C:18]=1[NH:17][C:16]([C:19]([NH2:29])=[O:21])=[CH:15]2)(=[O:7])=[O:8]

Participants

5

Reactant 3

HCID 6228DimethylformamideHCID 27239391,3-Propanediamine, N'-(ethylcarbonimidoyl)-N,N-dimethyl-, monohydrochlorideHCID 574761887-[(2-thienylsulfonyl)amino]-5-(trifluoromethoxy)-1H-indole-2-carboxylic acid

Product 1

HCID 574764287-[(2-thienylsulfonyl)amino]-5-(trifluoromethoxy)-1H-indole-2-carboxamideYield 89.4%

Reagents, catalysts & solvents 1

HCID 962WaterSolvent

Procedure

A mixture of 7-[(2-thienylsulfonyl)amino]-5-(trifluoromethoxy)-1H-indole-2-carboxylic acid (2.50 g), 1H-1,2,3-benzotriazol-1-ol-ammonia complex (1.89 g), N-[3-(dimethylamino)propyl]-N′-ethylcarbodiimide hydrochloride (2.38 g) and N,N-dimethylformamide (20 mL) was stirred at room temperature for 15 hr. Water was added to the reaction mixture, and the mixture was extracted with ethyl acetate. The ethyl acetate layer was washed successively with saturated aqueous sodium hydrogencarbonate and saturated brine, dried (MgSO4), and concentrated. The residue was washed with hexane to give the title compound (2.23 g, yield 89%) as pale-yellow crystals. The crystals were recrystallized from ethyl acetate-hexane to give colorless prism crystals. melting point >300° C.

Workup

  1. extractionthe mixture was extracted with ethyl acetate
  2. washThe ethyl acetate layer was washed successively with saturated aqueous sodium hydrogencarbonate and saturated brine
  3. dry with materialdried (MgSO4)
  4. concentrationconcentrated
  5. washThe residue was washed with hexane

Sources & evidence

ORD record
ord-92db45aa7e944f62aba49fbe1385762d
Source dataset
uspto-grants-2013_04
Patent number
US08410087B2

Reaction notes

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