Trifluoromethanesulfonic anhydride → HCID 59136045, compound

HRID 1994694Notes

Reaction equation

HRID 1994694 reaction equation
[CH2:1]([S:8][C:9]([CH3:36])([CH:33]=[N:34]O)[CH2:10][NH:11][C:12]([C:14]1[NH:15][C:16]2[C:21]([CH:22]=1)=[CH:20][CH:19]=[CH:18][C:17]=2[N:23]([CH3:32])[S:24]([C:27]1[S:28][CH:29]=[CH:30][CH:31]=1)(=[O:26])=[O:25])=[O:13])[C:2]1[CH:7]=[CH:6][CH:5]=[CH:4][CH:3]=1.FC(F)(F)S(OS(C(F)(F)F)(=O)=O)(=O)=O>N1C=CC=CC=1>[CH2:1]([S:8][C:9]([C:33]#[N:34])([CH3:36])[CH2:10][NH:11][C:12]([C:14]1[NH:15][C:16]2[C:21]([CH:22]=1)=[CH:20][CH:19]=[CH:18][C:17]=2[N:23]([CH3:32])[S:24]([C:27]1[S:28][CH:29]=[CH:30][CH:31]=1)(=[O:26])=[O:25])=[O:13])[C:2]1[CH:3]=[CH:4][CH:5]=[CH:6][CH:7]=1

Participants

4

Reactant 2

HCID 67749Trifluoromethanesulfonic anhydrideHCID 72526046HCID 72526046, compound

Product 1

HCID 59136045HCID 59136045, compoundYield 45%

Reagents, catalysts & solvents 1

HCID 1049PyridineSolvent

Procedure

To a mixture of N-[2-(benzylthio)-3-(hydroxyimino)-2-methylpropyl]-7-[methyl(2-thienylsulfonyl)amino]-1H-indole-2-carboxamide (1.00 g) and pyridine (6 ml) was added trifluoromethanesulfonic anhydride (0.40 ml) at 0° C., and the mixture was stirred overnight at room temperature. The reaction mixture was concentrated, 10% aqueous citric acid solution was added to the residue, and the mixture was extracted with ethyl acetate. The ethyl acetate layer was washed with saturated brine, dried (MgSO4), and concentrated. The residue was subjected to basic silica gel column chromatography to give the title compound (0.43 g, yield 45%) as colorless crystals from a fraction eluted with ethyl acetate-hexane (1:2, volume ratio). melting point 181-182° C.

Workup

  1. concentrationThe reaction mixture was concentrated
  2. addition10% aqueous citric acid solution was added to the residue
  3. extractionthe mixture was extracted with ethyl acetate
  4. washThe ethyl acetate layer was washed with saturated brine
  5. dry with materialdried (MgSO4)
  6. concentrationconcentrated

Sources & evidence

ORD record
ord-b3cd810fcdc045359f9764fda216ea7e
Source dataset
uspto-grants-2010_01
Patent number
US07652133B2

Reaction notes

Loading…