Trifluoroacetic acid → HCID 178428383, compound

HRID 82078Notes

Reaction equation

HRID 82078 reaction equation
[N:1]1[C:9]2[CH:8]=[CH:7][N:6]=[CH:5][C:4]=2[NH:3][C:2]=1[C:10]1[C:18]2[C:13](=[N:14][CH:15]=[C:16]([C:19]3[CH:20]=[N:21][CH:22]=[CH:23][C:24]=3[CH3:25])[CH:17]=2)[N:12](C2CCCCO2)[N:11]=1.C([SiH](CC)CC)C.C(O)(C(F)(F)F)=O>C(Cl)Cl>[N:1]1[C:9]2[CH:8]=[CH:7][N:6]=[CH:5][C:4]=2[NH:3][C:2]=1[C:10]1[C:18]2[C:13](=[N:14][CH:15]=[C:16]([C:19]3[CH:20]=[N:21][CH:22]=[CH:23][C:24]=3[CH3:25])[CH:17]=2)[NH:12][N:11]=1

Participants

5

Reactant 3

HCID 6422Trifluoroacetic acidHCID 12052TriethylsilaneHCID 1361935913-(3H-imidazo[4,5-c]pyridin-2-yl)-5-(4-methylpyridin-3-yl)-1-(tetrahydro-2H-pyran-2-yl)-1H-pyrazolo[3,4-b]pyridine

Product 1

HCID 178428383HCID 178428383, compoundYield 43%

Reagents, catalysts & solvents 1

HCID 6344DichloromethaneSolvent

Procedure

To a solution of 3-(3H-imidazo[4,5-c]pyridin-2-yl)-5-(4-methylpyridin-3-yl)-1-(tetrahydro-2H-pyran-2-yl)-1H-pyrazolo[3,4-b]pyridine (LIX) (0.110 g, 0.26 mmol) in dry DCM (5 mL) was added triethylsilane (0.104 mL, 0.65 mmol) followed by TFA (2.5 mL) and stirred at room temperature for 3 h under nitrogen. The solvent was evaporated under reduced pressure, the residue was taken up water (10 mL), and basified with concentrated NH4OH. The precipitates were filtered, washed by cold water and dried under vacuum at room temperature. The crude product was suspended in DCM (10 mL), sonicated briefly and then heated to boiling for 5 min. The solution was cooled to room temperature and the solids were filtered, washed with DCM and dried under vacuum at room temperature to produce 3-(3H-imidazo[4,5-c]pyridin-2-yl)-5-(4-methylpyridin-3-yl)-1H-pyrazolo[3,4-b]pyridine (29) as a white solid (37 mg, 0.11 mmol, 43% yield). 1H NMR (DMSO-d6) δ ppm 2.33 (s, 3H), 7.45 (d, J=4.78 Hz, 1H), 7.75 (bd, 1 H), 8.43 (d, J=5.29 Hz, 1 H), 8.54 (bs, 2 H), 8.69-8.82 (m, 3 H), 14.64 (s, 1 H); ESIMS Found for C18H13N7 m/z 328.4 (M+H).

Workup

  1. customThe solvent was evaporated under reduced pressure
  2. filtrationThe precipitates were filtered
  3. washwashed by cold water
  4. customdried under vacuum at room temperature
  5. customsonicated briefly
  6. temperatureheated
  7. waitto boiling for 5 min
  8. temperatureThe solution was cooled to room temperature
  9. filtrationthe solids were filtered
  10. washwashed with DCM
  11. customdried under vacuum at room temperature

Sources & evidence

ORD record
ord-e03260bfc7fd415d8aa59790d3386703
Source dataset
uspto-grants-2014_09
Patent number
US08846714B2

Reaction notes

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