3-Aminopyridine → HCID 86679703, compound

HRID 2367707Notes

Reaction equation

HRID 2367707 reaction equation
[N:1]1[CH:6]=[CH:5][CH:4]=[C:3]([C:7]2[CH:8]=[C:9]3[C:13](=[CH:14][CH:15]=2)[N:12]([CH:16]2[CH2:21][CH2:20][CH2:19][CH2:18][O:17]2)[N:11]=[C:10]3[C:22]([OH:24])=O)[CH:2]=1.[NH2:25][C:26]1[CH:27]=[N:28][CH:29]=[CH:30][CH:31]=1.C(N(CC)C(C)C)(C)C.CN(C(ON1N=NC2C=CC=NC1=2)=[N+](C)C)C.F[P-](F)(F)(F)(F)F>CN(C=O)C>[N:28]1[CH:29]=[CH:30][CH:31]=[C:26]([NH:25][C:22]([C:10]2[C:9]3[C:13](=[CH:14][CH:15]=[C:7]([C:3]4[CH:2]=[N:1][CH:6]=[CH:5][CH:4]=4)[CH:8]=3)[N:12]([CH:16]3[CH2:21][CH2:20][CH2:19][CH2:18][O:17]3)[N:11]=2)=[O:24])[CH:27]=1

Participants

6

Reactant 4

HCID 100093-AminopyridineHCID 81531DiisopropylethylamineHCID 9886157Methanaminium, N-((dimethylamino)(3H-1,2,3-triazolo(4,5-b)pyridin-3-yloxy)methylene)-N-methyl-, hexafluorophosphate(1-) (1:1)HCID 86679701HCID 86679701, compound

Product 1

HCID 86679703HCID 86679703, compoundYield 75%

Reagents, catalysts & solvents 1

HCID 6228DimethylformamideSolvent

Conditions

Temperature
0 °C

Procedure

To a solution of 5-(pyridin-3-yl)-1-(tetrahydro-2H-pyran-2-yl)-1H-indazole-3-carboxylic acid (CXXXIII) (0.39 g, 1.21 mmol) and 3-aminopyridine (CXXVII) (0.11 g, 1.21 mmol) in DMF (4.0 mL) was added N,N-diisopropylethylamine (0.42 mL, 1.21 mmol). The solution was cooled to 0° C. before adding HATU (0.46 g, 1.21 mmol). The ice bath was removed, and the reaction warmed to room temperature and stirred for 2 h. The DMF was removed under reduced pressure, and the residue was partitioned between chloroform and water. The organic phase was separated and washed sequentially with water and brine, dried over MgSO4, filtered, and concentrated. The product was purified by column chromatography using a 25 g Thomson normal phase silica gel cartridge (100% CHCl3→2:98 MeOH:CHCl3) to afford N,5-di(pyridin-3-yl)-1-(tetrahydro-2H-pyran-2-yl)-1H-indazole-3-carboxamide (CXXXIV) (0.36 g, 0.90 mmol, 75% yield) as an off-white solid. 1H NMR (DMSO-d6) δ ppm 10.56 (s, 1H), 9.06 (d, J=2.4 Hz, 1H), 8.94 (d, J=2.3 Hz, 1H), 8.60 (dd, J=4.8, 1.5 Hz, 1H), 8.47 (d, J=1.1 Hz, 1H), 8.34-8.33 (m, 1H), 8.31-8.29 (m, 1H), 8.16-8.14 (m, 1H), 8.04 (d, J=8.8 Hz, 1H), 7.90 (dd, J=8.8, 1.8 Hz, 1H), 7.54-7.52 (m, 1H), 7.43-7.41 (m, 1H), 7.43-7.41 (m, 1H), 6.08-6.06 (m, 1H), 4.01-3.99 (m, 1H), 3.87-3.82 (m, 1H), 2.64-2.57 (m, 1H), 2.11-2.06 (m, 2H), 1.84-1.80 (m, 1H), 1.69-1.65 (m, 2H); ESIMS found for C23H21N5O2 m/z 400 (M+H).

Workup

  1. customThe ice bath was removed
  2. temperaturethe reaction warmed to room temperature
  3. customThe DMF was removed under reduced pressure
  4. customthe residue was partitioned between chloroform and water
  5. customThe organic phase was separated
  6. washwashed sequentially with water and brine
  7. dry with materialdried over MgSO4
  8. filtrationfiltered
  9. concentrationconcentrated
  10. customThe product was purified by column chromatography

Sources & evidence

ORD record
ord-d0a972b0338446c4aea22fd9232e4912
Source dataset
uspto-grants-2014_04
Patent number
US08697887B2

Reaction notes

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