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

HRID 2203932Notes

Reaction equation

HRID 2203932 reaction equation
[NH2:1][C:2]1[C:10]2[C:5](=[N:6][CH:7]=[C:8]([Br:25])[C:9]=2[N:11]2[CH2:16][CH2:15][CH2:14][C@@H:13]([NH:17][C:18](=[O:24])[O:19][C:20]([CH3:23])([CH3:22])[CH3:21])[CH2:12]2)[NH:4][CH:3]=1.C([O:29][C@@H:30]([CH3:34])[C:31](O)=[O:32])(=O)C.C1N(P(Cl)(N2C(=O)OCC2)=O)C(=O)OC1.C(N(CC)CC)C.[Li+].[OH-]>C(Cl)Cl.CC#N.O.O>[Br:25][C:8]1[C:9]([N:11]2[CH2:16][CH2:15][CH2:14][C@@H:13]([NH:17][C:18](=[O:24])[O:19][C:20]([CH3:21])([CH3:22])[CH3:23])[CH2:12]2)=[C:10]2[C:2]([NH:1][C:31](=[O:32])[C@@H:30]([OH:29])[CH3:34])=[CH:3][NH:4][C:5]2=[N:6][CH:7]=1

Participants

9

Reactant 5

HCID 3939Lithium HydroxideHCID 8471TriethylamineHCID 152842Bis(2-oxo-3-oxazolidinyl)phosphinic chlorideHCID 6326324(2S)-2-(Acetyloxy)propanoic acidHCID 67045407(R)-tert-butyl 1-(3-amino-5-bromo-1H-pyrrolo[2,3-b]pyridin-4-yl)piperidin-3-ylcarbamate

Product 1

HCID 60205585tert-butyl (R)-1-(5-bromo-3-((S)-2-hydroxypropanamido)-1H-pyrrolo[2,3-b]pyridin-4-yl)piperidin-3-ylcarbamateYield 51.1%

Reagents, catalysts & solvents 3

HCID 962WaterSolventHCID 6344DichloromethaneSolventHCID 18373917Acetonitrile--water (1/1)Solvent

Procedure

(R)-tert-Butyl 1-(3-amino-5-bromo-1H-pyrrolo[2,3-b]pyridin-4-yl)piperidin-3-ylcarbamate (0.200 g, 0.487 mmol; Example 98, Step A), (S)-2-acetoxypropanoic acid (0.386 g, 2.92 mmol), BOP-Cl (0.745 g, 2.92 mmol), and triethylamine (0.679 mL, 4.87 mmol) were placed in DCM (6 mL) and stirred at room temperature for 18 hours. 3M aqueous LiOH (6 mL) was then added. The reaction was stirred for 10 minutes, poured into water, and extracted with DCM. The combined organic fractions were dried (MgSO4), filtered, and concentrated to give the crude product, which was purified by reverse phase chromatography (Biotage SP4, C-18 25M+, 5-95 CH3CN/water) to give tert-butyl (R)-1-(5-bromo-3-((S)-2-hydroxypropanamido)-1H-pyrrolo[2,3-b]pyridin-4-yl)piperidin-3-ylcarbamate (0.120 g, 51% yield).

Workup

  1. stirringThe reaction was stirred for 10 minutes
  2. extractionextracted with DCM
  3. dry with materialThe combined organic fractions were dried (MgSO4)
  4. filtrationfiltered
  5. concentrationconcentrated
  6. customto give the crude product, which
  7. customwas purified by reverse phase chromatography (Biotage SP4

Sources & evidence

ORD record
ord-684aa50dd3e64e4ab5dc5d79e0a036b4
Source dataset
uspto-grants-2016_06
Patent number
US09365568B2

Reaction notes

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