Pentafluorophenol → Pentafluorophenyl 2-(2-((tert-butoxycarbonyl) (2,2,2-trifluoroethyl)amino)pyridin-4-yl)-1,3-oxazole-4-carboxylate

HRID 632804Notes

Reaction equation

HRID 632804 reaction equation
[C:1]([O:5][C:6]([N:8]([CH2:23][C:24]([F:27])([F:26])[F:25])[C:9]1[CH:14]=[C:13]([C:15]2[O:16][CH:17]=[C:18]([C:20]([OH:22])=[O:21])[N:19]=2)[CH:12]=[CH:11][N:10]=1)=[O:7])([CH3:4])([CH3:3])[CH3:2].[F:28][C:29]1[C:34](O)=[C:33]([F:36])[C:32]([F:37])=[C:31]([F:38])[C:30]=1[F:39].CN(C(ON1N=NC2C=CC=NC1=2)=[N+](C)C)C.F[P-](F)(F)(F)(F)F.[Cl-].[NH4+]>CN(C=O)C.C(N(CC)CC)C>[C:1]([O:5][C:6]([N:8]([CH2:23][C:24]([F:27])([F:26])[F:25])[C:9]1[CH:14]=[C:13]([C:15]2[O:16][CH:17]=[C:18]([C:20]([O:22][C:34]3[C:33]([F:36])=[C:32]([F:37])[C:31]([F:38])=[C:30]([F:39])[C:29]=3[F:28])=[O:21])[N:19]=2)[CH:12]=[CH:11][N:10]=1)=[O:7])([CH3:4])([CH3:2])[CH3:3]

Participants

7

Reactant 4

HCID 13041PentafluorophenolHCID 25517Ammonium ChlorideHCID 9886157Methanaminium, N-((dimethylamino)(3H-1,2,3-triazolo(4,5-b)pyridin-3-yloxy)methylene)-N-methyl-, hexafluorophosphate(1-) (1:1)HCID 1180609712-(2-((Tert-butoxycarbonyl)(2,2,2-trifluoroethyl)amino)pyridin-4-yl)oxazole-4-carboxylic acid

Product 1

HCID 118061096Pentafluorophenyl 2-(2-((tert-butoxycarbonyl) (2,2,2-trifluoroethyl)amino)pyridin-4-yl)-1,3-oxazole-4-carboxylate

Reagents, catalysts & solvents 2

HCID 6228DimethylformamideSolventHCID 8471TriethylamineSolvent

Procedure

To a solution of 2-(2-((tert-butoxycarbonyl)(2,2,2-trifluoroethyl)amino)pyridin-4-yl)oxazole-4-carboxylic acid (315 mg), pentafluorophenol (0.10 mL) and triethylamine (0.23 mL) in DMF (4.1 mL) was added HATU (371 mg), and the mixture was stirred at room temperature for 2 hr. The reaction mixture was poured into saturated aqueous ammonium chloride solution, and the mixture was extracted with ethyl acetate. The extract was washed successively with saturated aqueous sodium hydrogen carbonate solution and saturated brine, and dried over anhydrous magnesium sulfate, and the solvent was evaporated under reduced pressure. The residue was purified by silica gel column chromatography (ethyl acetate/hexane) to give the title compound (450 mg).

Workup

  1. extractionthe mixture was extracted with ethyl acetate
  2. washThe extract was washed successively with saturated aqueous sodium hydrogen carbonate solution and saturated brine
  3. dry with materialdried over anhydrous magnesium sulfate
  4. customthe solvent was evaporated under reduced pressure
  5. customThe residue was purified by silica gel column chromatography (ethyl acetate/hexane)

Sources & evidence

ORD record
ord-54ec6d478fd44c3ab1e425e62fdc341a
Source dataset
uspto-grants-2016_04
Patent number
US09321757B2

Reaction notes

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