Trifluoroacetic acid → HCID 57469060, compound

HRID 1989692Notes

Reaction equation

HRID 1989692 reaction equation
C([NH:5][S:6]([C:9]1[S:10][C:11]([C:14]2[N:15]=[CH:16][N:17]([C:19]3[N:24]=[C:23]([C:25]4[CH:30]=[CH:29][C:28]([F:31])=[C:27]([F:32])[CH:26]=4)[CH:22]=[C:21]([C:33]([F:36])([F:35])[F:34])[N:20]=3)[CH:18]=2)=[CH:12][CH:13]=1)(=[O:8])=[O:7])(C)(C)C.C(O)(C(F)(F)F)=O>ClCCl>[F:32][C:27]1[CH:26]=[C:25]([C:23]2[CH:22]=[C:21]([C:33]([F:35])([F:34])[F:36])[N:20]=[C:19]([N:17]3[CH:18]=[C:14]([C:11]4[S:10][C:9]([S:6]([NH2:5])(=[O:8])=[O:7])=[CH:13][CH:12]=4)[N:15]=[CH:16]3)[N:24]=2)[CH:30]=[CH:29][C:28]=1[F:31]

Participants

4

Reactant 2

HCID 6422Trifluoroacetic acidHCID 60209477HCID 60209477, compound

Product 1

HCID 57469060HCID 57469060, compoundYield 46%

Reagents, catalysts & solvents 1

HCID 6344DichloromethaneSolvent

Procedure

To a cooled and stirred solution of 5-{1-[4-(3,4-difluoro-phenyl)-6-trifluoromethyl-pyrimidin-2-yl]-1H-imidazol-4-yl}-thiophene-2-sulfonic acid tert-butyl amide (0.24 g) in dichloromethane (4 ml) was added TFA (4 ml) and the reaction mixture was allowed to stir at room temperature for 15 h. The mixture was evaporated to dryness, poured into 2N NaHCO3 solution (25 ml) and extracted ethyl acetate (3×50 ml). The combined organic layers were washed with brine (50 ml), dried (MgSO4) and evaporated. Further purification by flash chromatography on silica gel (MeOH/dichloromethane) and crystallization (dichloromethane/heptane) yielded the title compound as a light yellow solid (0.077 g, 46%). MS (ISP) 487.9 [(M+H)+]; mp 228° C.

Workup

  1. temperatureTo a cooled
  2. customThe mixture was evaporated to dryness
  3. additionpoured into 2N NaHCO3 solution (25 ml)
  4. extractionextracted ethyl acetate (3×50 ml)
  5. washThe combined organic layers were washed with brine (50 ml)
  6. dry with materialdried (MgSO4)
  7. customevaporated
  8. customFurther purification by flash chromatography
  9. customon silica gel (MeOH/dichloromethane) and crystallization (dichloromethane/heptane)

Sources & evidence

ORD record
ord-4648840b3856482ab35e1a9f6cb4f6c8
Source dataset
uspto-grants-2010_01
Patent number
US07642264B2

Reaction notes

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