Diisopropylethylamine → tert-butyl (R)-1-(5-bromo-3-((S)-tetrahydrofuran-2-carboxamido)-1H-pyrrolo[2,3-b]pyridin-4-yl)piperidin-3-ylcarbamate

HRID 875802Notes

Reaction equation

HRID 875802 reaction equation
[Br:1][C:2]1[C:3](F)=[C:4]2[C:10]([NH:11][C:12]([C@@H:14]3[CH2:18][CH2:17][CH2:16][O:15]3)=[O:13])=[CH:9][NH:8][C:5]2=[N:6][CH:7]=1.[NH:20]1[CH2:25][CH2:24][CH2:23][C@@H:22]([NH:26][C:27](=[O:33])[O:28][C:29]([CH3:32])([CH3:31])[CH3:30])[CH2:21]1.C(N(C(C)C)C(C)C)C>CCCCO>[Br:1][C:2]1[C:3]([N:20]2[CH2:25][CH2:24][CH2:23][C@@H:22]([NH:26][C:27](=[O:33])[O:28][C:29]([CH3:31])([CH3:30])[CH3:32])[CH2:21]2)=[C:4]2[C:10]([NH:11][C:12]([C@@H:14]3[CH2:18][CH2:17][CH2:16][O:15]3)=[O:13])=[CH:9][NH:8][C:5]2=[N:6][CH:7]=1

Participants

5

Reactant 3

HCID 81531DiisopropylethylamineHCID 1514172(3R)-3-Aminopiperidine, 3-BOC protectedHCID 60205501HCID 60205501, compound

Product 1

HCID 60205502tert-butyl (R)-1-(5-bromo-3-((S)-tetrahydrofuran-2-carboxamido)-1H-pyrrolo[2,3-b]pyridin-4-yl)piperidin-3-ylcarbamateYield 49.7%

Reagents, catalysts & solvents 1

HCID 2631-ButanolSolvent

Conditions

Temperature
160 °C

Procedure

A mixture of (S)—N-(5-bromo-4-fluoro-1H-pyrrolo[2,3-b]pyridin-3-yl)tetrahydrofuran-2-carboxamide (195 mg, 0.594 mmol), (R)-tert-butyl piperidin-3-ylcarbamate (357 mg, 1.78 mmol), and N-ethyl-N-isopropylpropan-2-amine (207 μL, 1.19 mmol) in n-BuOH (5 mL) were purged under N2 and stirred at 160° C. in a sealed tube for 16 hours. The solvent was then removed in vacuo, and the residue obtained was purified by C-18 reverse phase column chromatography (Biotage Flash 25M+; C-18) on Biotage SP4 unit eluting with a gradient of 15-90% CH3CN/water (25 CV) to provide tert-butyl (R)-1-(5-bromo-3-((S)-tetrahydrofuran-2-carboxamido)-1H-pyrrolo[2,3-b]pyridin-4-yl)piperidin-3-ylcarbamate (150 mg, 0.295 mmol, 49.6% yield) as a solid. LCMS (APCI+) m/z 508.1, 510.1 (M+H)+; Retention time=3.85 minutes (Method 2).

Workup

  1. customwere purged under N2
  2. customThe solvent was then removed in vacuo
  3. customthe residue obtained
  4. customwas purified by C-18 reverse phase column chromatography (Biotage Flash 25M+; C-18) on Biotage SP4 unit
  5. washeluting with a gradient of 15-90% CH3CN/water (25 CV)

Sources & evidence

ORD record
ord-f259b943fe97493b9f22a133384d9032
Source dataset
uspto-grants-2015_03
Patent number
US08981085B2

Reaction notes

Loading…