2-(Pyrrolidin-3-yl)pyridine → N-(5-bromo-4-(3-(pyridin-2-yl)pyrrolidin-1-yl)-1H-pyrrolo[2,3-b]pyridin-3-yl)nicotinamide

HRID 408205Notes

Reaction equation

HRID 408205 reaction equation
[Br:1][C:2]1[C:3](F)=[C:4]2[C:10]([NH:11][C:12](=[O:19])[C:13]3[CH:18]=[CH:17][CH:16]=[N:15][CH:14]=3)=[CH:9][NH:8][C:5]2=[N:6][CH:7]=1.[NH:21]1[CH2:25][CH2:24][CH:23]([C:26]2[CH:31]=[CH:30][CH:29]=[CH:28][N:27]=2)[CH2:22]1>CCCCO>[Br:1][C:2]1[C:3]([N:21]2[CH2:25][CH2:24][CH:23]([C:26]3[CH:31]=[CH:30][CH:29]=[CH:28][N:27]=3)[CH2:22]2)=[C:4]2[C:10]([NH:11][C:12](=[O:19])[C:13]3[CH:18]=[CH:17][CH:16]=[N:15][CH:14]=3)=[CH:9][NH:8][C:5]2=[N:6][CH:7]=1

Participants

4

Reactant 2

HCID 50139382-(Pyrrolidin-3-yl)pyridineHCID 60205277N-(5-bromo-4-fluoro-1H-pyrrolo[2,3-b]pyridin-3-yl)nicotinamide

Product 1

HCID 44513180N-(5-bromo-4-(3-(pyridin-2-yl)pyrrolidin-1-yl)-1H-pyrrolo[2,3-b]pyridin-3-yl)nicotinamideYield 20.9%

Reagents, catalysts & solvents 1

HCID 2631-ButanolSolvent

Procedure

N-(5-Bromo-4-fluoro-1H-pyrrolo[2,3-b]pyridin-3-yl)nicotinamide (100 mg, 0.3 mmol, Example 1, Step I) in n-BuOH (3 mL) and 2-(pyrrolidin-3-yl)pyridine (133 mg, 0.9 mmol) were heated to 160° C. in a sealed tube for 48 hours. After cooling down, the reaction was concentrated to dryness, and the residue purified by C-18 reverse phase flash chromatography (Biotage SP4 unit, C-18 25M column, 10-90% CH3CN/water gradient; 30 CV) to yield N-(5-bromo-4-(3-(pyridin-2-yl)pyrrolidin-1-yl)-1H-pyrrolo[2,3-b]pyridin-3-yl)nicotinamide (29 mg) as a solid. This solid was dissolved in MeOH (1 mL), and then the solution was added dropwise to a 4N HCl solution in dioxane. The resulting solid was collected and dried to yield N-(5-bromo-4-(3-(pyridin-2-yl)pyrrolidin-1-yl)-1H-pyrrolo[2,3-b]pyridin-3-yl)nicotinamide hydrochloride (35 mg, 25% yield) as a solid. 1H NMR (400 MHz, (CD3)2SO) δ 12.07 (d, 1H), 10.52 (s, 1H), 9.30 (d, 1H), 8.94-8.91 (m, 1H), 8.72-8.66 (m, 2H), 8.39-8.33 (m, 2H), 7.92-7.76 (m, 3H), 7.71 (d, 1H), 7.20 (br s, 2H), 4.06-3.95 (m, 2H), 3.80-3.67 (m, 3H), 2.48-2.40 (m, 1H), 2.23-2.11 (m, 1H). LCMS (APCI+) m/z 463, 465 (M+H)+, Retention time=2.78 minutes (Method 1).

Workup

  1. temperatureAfter cooling down
  2. concentrationthe reaction was concentrated to dryness
  3. customthe residue purified by C-18 reverse phase flash chromatography (Biotage SP4 unit

Sources & evidence

ORD record
ord-7673d59808f84721b20bfe9666e1845e
Source dataset
uspto-grants-2014_06
Patent number
US08758830B2

Reaction notes

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