Trifluoroacetic acid → HCID 67045386, compound

HRID 1923774Notes

Reaction equation

HRID 1923774 reaction equation
[Br:1][C:2]1[C:3](F)=[C:4]2[C:10]([NH:11][C:12](=[O:20])[C:13]3[CH:18]=[CH:17][C:16]([Cl:19])=[CH:15][N:14]=3)=[CH:9][NH:8][C:5]2=[N:6][CH:7]=1.[NH:22]1[CH2:27][CH2:26][CH2:25][C@@H:24]([NH:28]C(=O)OC(C)(C)C)[CH2:23]1.CCN(C(C)C)C(C)C.C(O)(C(F)(F)F)=O>CCCCO.C(Cl)Cl>[ClH:19].[NH2:28][C@@H:24]1[CH2:25][CH2:26][CH2:27][N:22]([C:3]2[C:2]([Br:1])=[CH:7][N:6]=[C:5]3[NH:8][CH:9]=[C:10]([NH:11][C:12](=[O:20])[C:13]4[CH:18]=[CH:17][C:16]([Cl:19])=[CH:15][N:14]=4)[C:4]=23)[CH2:23]1

Participants

7

Reactant 4

HCID 6422Trifluoroacetic acidHCID 81531DiisopropylethylamineHCID 1514172(3R)-3-Aminopiperidine, 3-BOC protectedHCID 60205402HCID 60205402, compound

Product 1

HCID 67045386HCID 67045386, compoundYield 32.1%

Reagents, catalysts & solvents 2

HCID 2631-ButanolSolventHCID 6344DichloromethaneSolvent

Procedure

N-(5-Bromo-4-fluoro-1H-pyrrolo[2,3-b]pyridin-3-yl)-5-chloropicolinamide (240 mg, 0.64 mmol), (R)-tert-butyl piperidin-3-ylcarbamate (380 mg, 1.91 mmol) and DIEA (0.17 mL, 0.95 mmol) in n-BuOH (2 mL) were stirred at 148° C. (bath) for 40 hours. The solvent was removed, and the residue was dissolved in ethyl acetate (20 mL), washed with water (10 mL), brine (10 mL) and dried over sodium sulfate. After removal of the solvent, the residue was purified by C-18 reverse phase flash chromatography (Biotage SP4 unit, C-18 25M column, 30-75% CH3CN/water gradient; 30 CV) to give a solid. This solid was dissolved in DCM (3 mL) and TFA (0.5 mL) was added. The mixture was stirred at room temperature for 1 hour. The solvent was removed. The residue was dissolved in DCM (1 mL), and 2N HCl in ether (3 mL) was added. The solid formed was collected by filtration to give (R)-N-(4-(3-aminopiperidin-1-yl)-5-bromo-1H-pyrrolo[2,3-b]pyridin-3-yl)-5-chloropicolinamide hydrochloride (50 mg, 14% yield) as a solid. 1H NMR (400 MHz, D2O) δ 8.24 (s, 1H), 8.08 (s, 1H), 7.63 (m, 1H), 7.55-7.58 (m, 2H), 3.59 (m, 1H), 3.42 (m, 1H), 3.35 (m, 1H), 3.27 (m, 1H), 2.77 (m, 1H), 2.11 (m, 1H), 1.87 (m, 1H), 1.68 (m, 1H), 1.40-1.48 (m, 1H); LCMS (APCI+) m/z 451 (M+H)+.

Workup

  1. customThe solvent was removed
  2. dissolutionthe residue was dissolved in ethyl acetate (20 mL)
  3. washwashed with water (10 mL), brine (10 mL)
  4. dry with materialdried over sodium sulfate
  5. customAfter removal of the solvent
  6. customthe residue was purified by C-18 reverse phase flash chromatography (Biotage SP4 unit
  7. custom30 CV) to give a solid
  8. customThe solvent was removed
  9. dissolutionThe residue was dissolved in DCM (1 mL)
  10. addition2N HCl in ether (3 mL) was added
  11. customThe solid formed
  12. filtrationwas collected by filtration

Sources & evidence

ORD record
ord-9698b57f03c6430fb6878110c0831bad
Source dataset
uspto-grants-2012_05
Patent number
US08178131B2

Reaction notes

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