(3R)-3-Aminopiperidine, 3-BOC protected → (R)-tert-butyl 1-(5-bromo-3-(quinoxaline-2-carboxamido)-1H-pyrrolo[2,3-b]pyridin-4-yl)piperidin-3-ylcarbamate

HRID 875751Notes

Reaction equation

[Br:1][C:2]1[C:3](F)=[C:4]2[C:10]([NH:11][C:12]([C:14]3[CH:23]=[N:22][C:21]4[C:16](=[CH:17][CH:18]=[CH:19][CH:20]=4)[N:15]=3)=[O:13])=[CH:9][NH:8][C:5]2=[N:6][CH:7]=1.[NH:25]1[CH2:30][CH2:29][CH2:28][C@@H:27]([NH:31][C:32](=[O:38])[O:33][C:34]([CH3:37])([CH3:36])[CH3:35])[CH2:26]1>CCCCO>[Br:1][C:2]1[C:3]([N:25]2[CH2:30][CH2:29][CH2:28][C@@H:27]([NH:31][C:32](=[O:38])[O:33][C:34]([CH3:36])([CH3:35])[CH3:37])[CH2:26]2)=[C:4]2[C:10]([NH:11][C:12]([C:14]3[CH:23]=[N:22][C:21]4[C:16](=[CH:17][CH:18]=[CH:19][CH:20]=4)[N:15]=3)=[O:13])=[CH:9][NH:8][C:5]2=[N:6][CH:7]=1

Participants

Conditions

Temperature: 155 °C

Procedure

N-(5-Bromo-4-fluoro-1H-pyrrolo[2,3-b]pyridin-3-yl)quinoxaline-2-carboxamide (0.240 g, 0.621 mmol) and (R)-tert-butyl piperidin-3-ylcarbamate (0.373 g, 1.86 mmol) were placed in n-BuOH (3 mL) and heated to 155° C. for 48 hours in a sealed tube. The reaction was then cooled to room temperature and concentrated to dryness. The resulting residue was purified by reverse phase HPLC (5:75 water:ACN gradient, Gilson system) to give (R)-tert-butyl 1-(5-bromo-3-(quinoxaline-2-carboxamido)-1H-pyrrolo[2,3-b]pyridin-4-yl)piperidin-3-ylcarbamate (0.040 g, 11% yield).

Workup

temperatureThe reaction was then cooled to room temperature
concentrationconcentrated to dryness
customThe resulting residue was purified by reverse phase HPLC (5:75 water:ACN gradient, Gilson system)

Sources & evidence

ORD record: ord-ac7852d1dd1a4d81bb9a3b025fa0d4b5
Source dataset: uspto-grants-2015_03
DOI: 10.6084/m9.figshare.5104873.v1
Patent number: US08981085B2

Reaction notes

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