Triethylamine → (R)-tert-butyl 1-(5-bromo-3-(2-cyanoacetamido)-1H-pyrrolo[2,3-b]pyridin-4-yl)piperidin-3-ylcarbamate

HRID 1923896Notes

Reaction equation

HRID 1923896 reaction equation
[C:1]([CH2:3][C:4]([OH:6])=O)#[N:2].C1N(P(Cl)(N2C(=O)OCC2)=O)C(=O)OC1.C(N(CC)CC)C.[NH2:29][C:30]1[C:38]2[C:33](=[N:34][CH:35]=[C:36]([Br:53])[C:37]=2[N:39]2[CH2:44][CH2:43][CH2:42][C@@H:41]([NH:45][C:46](=[O:52])[O:47][C:48]([CH3:51])([CH3:50])[CH3:49])[CH2:40]2)[NH:32][CH:31]=1>CC#N.O.O.CN1C(=O)CCC1>[Br:53][C:36]1[C:37]([N:39]2[CH2:44][CH2:43][CH2:42][C@@H:41]([NH:45][C:46](=[O:52])[O:47][C:48]([CH3:50])([CH3:49])[CH3:51])[CH2:40]2)=[C:38]2[C:30]([NH:29][C:4](=[O:6])[CH2:3][C:1]#[N:2])=[CH:31][NH:32][C:33]2=[N:34][CH:35]=1

Participants

8

Reactant 4

HCID 8471TriethylamineHCID 9740Cyanoacetic acidHCID 152842Bis(2-oxo-3-oxazolidinyl)phosphinic chlorideHCID 67045407(R)-tert-butyl 1-(3-amino-5-bromo-1H-pyrrolo[2,3-b]pyridin-4-yl)piperidin-3-ylcarbamate

Product 1

HCID 67045531(R)-tert-butyl 1-(5-bromo-3-(2-cyanoacetamido)-1H-pyrrolo[2,3-b]pyridin-4-yl)piperidin-3-ylcarbamateYield 26%

Reagents, catalysts & solvents 3

HCID 962WaterSolventHCID 13387N-methyl-2-pyrrolidoneSolventHCID 18373917Acetonitrile--water (1/1)Solvent

Procedure

2-Cyanoacetic acid (0.332 g, 3.90 mmol), BOP-Cl (0.993 g, 3.90 mmol), and triethylamine (1.02 mL, 7.31 mmol) were added to an NMP solution (2 mL) of (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). The reaction was then stirred for 18 hours, then 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 (R)-tert-butyl 1-(5-bromo-3-(2-cyanoacetamido)-1H-pyrrolo[2,3-b]pyridin-4-yl)piperidin-3-ylcarbamate (0.06 g, 26% yield).

Workup

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

Sources & evidence

ORD record
ord-5feb0caa04c747e7889a4663fbae30f2
Source dataset
uspto-grants-2012_05
Patent number
US08178131B2

Reaction notes

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