(3R)-3-Aminopiperidine, 3-BOC protected → HCID 67045421, compound

HRID 1923745Notes

Reaction equation

HRID 1923745 reaction equation
[Br:1][C:2]1[C:3](F)=[C:4]2[C:10]([NH:11][C:12]([CH:14]3[CH2:18][CH2:17][CH2:16][CH2:15]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>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]([CH:14]3[CH2:18][CH2:17][CH2:16][CH2:15]3)=[O:13])=[CH:9][NH:8][C:5]2=[N:6][CH:7]=1

Participants

4

Reactant 2

HCID 1514172(3R)-3-Aminopiperidine, 3-BOC protectedHCID 60205360HCID 60205360, compound

Product 1

HCID 67045421HCID 67045421, compoundYield 22%

Reagents, catalysts & solvents 1

HCID 2631-ButanolSolvent

Conditions

Temperature
160 °C

Procedure

A solution of N-(5-bromo-4-fluoro-1H-pyrrolo[2,3-b]pyridin-3-yl)cyclopentanecarboxamide (205 mg, 0.629 mmol) in n-BuOH (5 mL) was treated with (R)-tert-butyl piperidin-3-ylcarbamate (629 mg, 3.14 mmol) and stirred at 160° C. for 18 hours in a sealed tube. The solvent was removed in vacuo, and the residue was dissolved in EtOAc (50 mL) and washed with water (2×10 mL). The organic layer was dried (MgSO4), filtered, and concentrated in vacuo. The residue was purified by C-18 reverse phase flash chromatography (Biotage SP4 unit, C-18 25M column, 5-80% CH3CN/water gradient; 25 CV) to yield a solid, which was crystallized from CH3CN to provide (R)-tert-butyl 1-(5-bromo-3-(cyclopentane carboxamido)-1H-pyrrolo[2,3-b]pyridin-4-yl)piperidin-3-ylcarbamate (70 mg, 22% yield) as a solid. 1H NMR (400 MHz, (CD3)2SO) δ 11.56 (s, 1H), 9.36 (s, 1H), 8.14 (s, 1H), 7.64 (br s, 1H), 6.90 (br s, 1H), 3.56-3.47 (m, 1H), 3.20-3.11 (m, 2H), 3.04-2.97 (m, 1H), 2.81-2.74 (m, 1H), 1.91-1.80 (m, 4H), 1.78-1.70 (m, 3H), 1.67-1.59 (m, 3H), 1.55-1.50 (m, 2H), 1.42-1.34 (m, 1H); LCMS (APCI+) m/z 407.9 [(M-Boc)+H]+, Retention time=4.03 minutes (Method 2).

Workup

  1. customThe solvent was removed in vacuo
  2. dissolutionthe residue was dissolved in EtOAc (50 mL)
  3. washwashed with water (2×10 mL)
  4. dry with materialThe organic layer was dried (MgSO4)
  5. filtrationfiltered
  6. concentrationconcentrated in vacuo
  7. customThe residue was purified by C-18 reverse phase flash chromatography (Biotage SP4 unit
  8. custom25 CV) to yield a solid, which
  9. customwas crystallized from CH3CN

Sources & evidence

ORD record
ord-740cfb38fbed4e32bcd02b3d57d1c737
Source dataset
uspto-grants-2012_05
Patent number
US08178131B2

Reaction notes

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