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

HRID 1034863
Notes
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Reaction equation

HRID 1034863 reaction equation
[C:1](Cl)(=[O:4])[CH2:2][CH3:3].[NH2:6][C:7]1[C:15]2[C:10](=[N:11][CH:12]=[C:13]([Br:30])[C:14]=2[N:16]2[CH2:21][CH2:20][CH2:19][C@@H:18]([NH:22][C:23](=[O:29])[O:24][C:25]([CH3:28])([CH3:27])[CH3:26])[CH2:17]2)[NH:9][CH:8]=1.[Li+].[OH-]>CN1C(=O)CCC1.C(Cl)Cl.O.N1C=CC=CC=1>[Br:30][C:13]1[C:14]([N:16]2[CH2:21][CH2:20][CH2:19][C@@H:18]([NH:22][C:23](=[O:29])[O:24][C:25]([CH3:27])([CH3:26])[CH3:28])[CH2:17]2)=[C:15]2[C:7]([NH:6][C:1](=[O:4])[CH2:2][CH3:3])=[CH:8][NH:9][C:10]2=[N:11][CH:12]=1
ParticipantsProcedureWorkupSources & evidenceReaction notes

Participants

8

Reactant 3

HCID 3939Lithium HydroxideHCID 62324Propionyl chlorideHCID 67045407(R)-tert-butyl 1-(3-amino-5-bromo-1H-pyrrolo[2,3-b]pyridin-4-yl)piperidin-3-ylcarbamate

Product 1

HCID 67045151(R)-tert-butyl 1-(5-bromo-3-propionamido-1H-pyrrolo[2,3-b]pyridin-4-yl)piperidin-3-ylcarbamateYield 52.8%

Reagents, catalysts & solvents 4

HCID 962
Water
Solvent
HCID 1049PyridineSolvent
HCID 6344DichloromethaneSolvent2×
HCID 13387N-methyl-2-pyrrolidoneSolvent

Procedure

DCM (2 mL), pyridine (0.5 mL) and propionyl chloride (0.180 g, 1.95 mmol) were added to (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) in NMP (3 mL). The reaction was then stirred for 1 hour at room temperature. 3M aqueous LiOH (3 mL) was then added, and the reaction was stirred for 10 minutes. Water (10 mL) and DCM (10 mL) were then added, and the organic fraction was dried, filtered and concentrated to give the crude product. Purification by reverse phase HPLC (5-95% ACN in water) gave the product (R)-tert-butyl 1-(5-bromo-3-propionamido-1H-pyrrolo[2,3-b]pyridin-4-yl)piperidin-3-ylcarbamate (0.120 g, 52.8% yield).

Workup

  1. stirringthe reaction was stirred for 10 minutes
  2. customthe organic fraction was dried
  3. filtrationfiltered
  4. concentrationconcentrated
  5. customto give the crude product
  6. customPurification by reverse phase HPLC (5-95% ACN in water)

Sources & evidence

ORD record
ord-777ba5dd763842b0a18f001d6f8eed2b
Source dataset
uspto-grants-2013_10
DOI
10.6084/m9.figshare.5104873.v1
Patent number
US08545897B2

Reaction notes

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On this pageParticipantsProcedureWorkupSources & evidenceReaction notes