Triphenylphosphine Oxide → N-{2-[5-(dimethoxymethyl)-5-methyl-4,5-dihydro-1,3-thiazol-2-yl]-1H-indol-7-yl}-N-methylthiophene-2-sulfonamide

HRID 504686Notes

Reaction equation

HRID 504686 reaction equation
C1(P(=O)(C2C=CC=CC=2)C2C=CC=CC=2)C=CC=CC=1.FC(F)(F)S(OS(C(F)(F)F)(=O)=O)(=O)=O.C([S:43][C:44]([CH3:73])([CH:68]([O:71][CH3:72])[O:69][CH3:70])[CH2:45][NH:46][C:47]([C:49]1[NH:50][C:51]2[C:56]([CH:57]=1)=[CH:55][CH:54]=[CH:53][C:52]=2[N:58]([CH3:67])[S:59]([C:62]1[S:63][CH:64]=[CH:65][CH:66]=1)(=[O:61])=[O:60])=O)C1C=CC=CC=1.C(=O)([O-])O.[Na+]>ClCCl>[CH3:70][O:69][CH:68]([O:71][CH3:72])[C:44]1([CH3:73])[S:43][C:47]([C:49]2[NH:50][C:51]3[C:56]([CH:57]=2)=[CH:55][CH:54]=[CH:53][C:52]=3[N:58]([CH3:67])[S:59]([C:62]2[S:63][CH:64]=[CH:65][CH:66]=2)(=[O:61])=[O:60])=[N:46][CH2:45]1

Participants

6

Reactant 4

HCID 13097Triphenylphosphine OxideHCID 67749Trifluoromethanesulfonic anhydrideHCID 516892Sodium BicarbonateHCID 59135881HCID 59135881, compound

Product 1

HCID 59136092N-{2-[5-(dimethoxymethyl)-5-methyl-4,5-dihydro-1,3-thiazol-2-yl]-1H-indol-7-yl}-N-methylthiophene-2-sulfonamideYield 50%

Reagents, catalysts & solvents 1

HCID 6344DichloromethaneSolvent

Procedure

To a solution of triphenylphosphine oxide (1.02 g) in dichloromethane (10 ml) was slowly added trifluoromethanesulfonic anhydride (0.31 ml) at 0° C., and the mixture was stirred for 10 min. N-[2-(Benzylthio)-3,3-dimethoxy-2-methylpropyl]-7-[methyl(2-thienylsulfonyl)amino]-1H-indole-2-carboxamide (0.70 g) was added, and the reaction mixture was stirred at 0° C. for 30 min. Saturated aqueous sodium hydrogencarbonate was added, 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 silica gel column chromatography to give the title compound (0.28 g, yield 50%) as colorless crystals from a fraction eluted with ethyl acetate-hexane (2:3, volume ratio). melting point 153-154° C.

Workup

  1. customat 0° C.
  2. stirringthe reaction mixture was stirred at 0° C. for 30 min
  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-756f2580d6254310822a78f403f8a0fa
Source dataset
uspto-grants-2010_08
Patent number
US07777047B2

Reaction notes

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