Diisopropylethylamine → 5-bromo-1-(tetrahydro-2H-pyran-2-yl)-N-(6-(trifluoromethyl) pyridin-3-yl)-1H-indazole-3-carboxamide

HRID 2367702Notes

Reaction equation

HRID 2367702 reaction equation
CN(C(ON1N=NC2C=CC=NC1=2)=[N+](C)C)C.F[P-](F)(F)(F)(F)F.[Br:25][C:26]1[CH:27]=[C:28]2[C:32](=[CH:33][CH:34]=1)[N:31]([CH:35]1[CH2:40][CH2:39][CH2:38][CH2:37][O:36]1)[N:30]=[C:29]2[C:41]([OH:43])=O.C(N(C(C)C)CC)(C)C.[NH2:53][C:54]1[CH:55]=[CH:56][C:57]([C:60]([F:63])([F:62])[F:61])=[N:58][CH:59]=1>CN(C=O)C>[Br:25][C:26]1[CH:27]=[C:28]2[C:32](=[CH:33][CH:34]=1)[N:31]([CH:35]1[CH2:40][CH2:39][CH2:38][CH2:37][O:36]1)[N:30]=[C:29]2[C:41]([NH:53][C:54]1[CH:59]=[N:58][C:57]([C:60]([F:63])([F:61])[F:62])=[CH:56][CH:55]=1)=[O:43]

Participants

6

Reactant 4

HCID 81531DiisopropylethylamineHCID 27377445-Amino-2-(trifluoromethyl)pyridineHCID 9886157Methanaminium, N-((dimethylamino)(3H-1,2,3-triazolo(4,5-b)pyridin-3-yloxy)methylene)-N-methyl-, hexafluorophosphate(1-) (1:1)HCID 698056555-bromo-1-(tetrahydro-2H-pyran-2-yl)-1H-indazole-3-carboxylic acid

Product 1

HCID 866796985-bromo-1-(tetrahydro-2H-pyran-2-yl)-N-(6-(trifluoromethyl) pyridin-3-yl)-1H-indazole-3-carboxamideYield 93%

Reagents, catalysts & solvents 1

HCID 6228DimethylformamideSolvent

Procedure

HATU (1.125 g, 2.96 mmol) was added to a solution of 5-bromo-1-(tetrahydro-2H-pyran-2-yl)-1H-indazole-3-carboxylic acid (CXVIII) (0.876 g, 2.69 mmol) and diisopropylethylamine (1.03 mL, 5.92 mmol) in DMF stirred at room temperature under argon. After stirring 5 min, the solution was added with 5-amino-2-trifluoromethylpyridine (CXXVII) (0.479 g, 2.96 mmol). The solution was stirred 24 h at room temperature under argon. The DMF was removed under reduced pressure, and the residue was treated with water, sonicated briefly and filtered. The solids were washed with cold water and dried at room temperature. The product was purified by silica gel column chromatography (100% hexanes→7:93 EtOAc:hexanes) to afford 5-bromo-1-(tetrahydro-2H-pyran-2-yl)-N-(6-(trifluoromethyl)pyridin-3-yl)-1H-indazole-3-carboxamide (CXXVIII) as a white solid (1.17 g, 2.50 mmol, 93% yield). 1H NMR (DMSO-d6) δ ppm 10.93 (s, 1H), 9.23 (d, J=1.9 Hz, 1H), 8.60 (dd, J=6.8, 1.4 Hz, 1H), 8.38 (d, J=4.4 Hz, 1H), 7.95 (m, 2H), 7.70 (dd, J=7.1, 1.5 Hz, 1H), 6.04 (dd, J=8.1, 1.9 Hz, 1H), 3.98 (m, 1H), 3.82 (m, 1H), 2.59-2.54 (m, 1H), 2.08-2.03 (m, 2H), 1.81-1.77 (m, 1H). 1.66-1.61 (m, 2H); ESIMS found for C19H16BrF3N4O2 m/z 470.0 (M+H).

Workup

  1. stirringAfter stirring 5 min
  2. stirringThe solution was stirred 24 h at room temperature under argon
  3. customThe DMF was removed under reduced pressure
  4. additionthe residue was treated with water
  5. customsonicated briefly
  6. filtrationfiltered
  7. washThe solids were washed with cold water
  8. customdried at room temperature
  9. customThe product was purified by silica gel column chromatography (100% hexanes→7:93 EtOAc:hexanes)

Sources & evidence

ORD record
ord-2c37d51f5b98495eae5d6c194484bc6a
Source dataset
uspto-grants-2014_04
Patent number
US08697887B2

Reaction notes

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