2-Pyrazinecarboxylic acid → N-(4-chloro-5-(trifluoromethyl)-1H-pyrrolo[2,3-b]pyridin-3-yl)pyrazine-2-carboxamide

HRID 1034749Notes

Reaction equation

HRID 1034749 reaction equation
[Cl:1][C:2]1[C:7]([C:8]([F:11])([F:10])[F:9])=[CH:6][N:5]=[C:4]2[NH:12][CH:13]=[C:14]([NH2:15])[C:3]=12.[N:16]1[CH:21]=[CH:20][N:19]=[CH:18][C:17]=1[C:22](O)=[O:23].C1N(P(Cl)(N2C(=O)OCC2)=O)C(=O)OC1.C(N(CC)CC)C.[Li+].[OH-]>C(Cl)Cl.O>[Cl:1][C:2]1[C:7]([C:8]([F:11])([F:9])[F:10])=[CH:6][N:5]=[C:4]2[NH:12][CH:13]=[C:14]([NH:15][C:22]([C:17]3[CH:18]=[N:19][CH:20]=[CH:21][N:16]=3)=[O:23])[C:3]=12

Participants

8

Reactant 5

HCID 10472-Pyrazinecarboxylic acidHCID 3939Lithium HydroxideHCID 8471TriethylamineHCID 152842Bis(2-oxo-3-oxazolidinyl)phosphinic chlorideHCID 602053084-chloro-5-(trifluoromethyl)-1H-pyrrolo[2,3-b]pyridin-3-amine

Product 1

HCID 60205416N-(4-chloro-5-(trifluoromethyl)-1H-pyrrolo[2,3-b]pyridin-3-yl)pyrazine-2-carboxamideYield 79.3%

Reagents, catalysts & solvents 2

HCID 962WaterSolventHCID 6344DichloromethaneSolvent2×

Procedure

4-Chloro-5-(trifluoromethyl)-1H-pyrrolo[2,3-b]pyridin-3-amine (0.200 g, 0.849 mmol, Example 11, Step G) and pyrazine-2-carboxylic acid (0.221 g, 1.78 mmol) were placed in DCM (5 mL) at room temperature. BOP—Cl (0.454 g, 1.78 mmol) was then added, followed by the addition of triethylamine (0.592 mL, 4.24 mmol). The reaction was stirred for 1 hour. 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 reaction was filtered. The resulting solid was slurried with 10:1 DCM:MeOH and filtered to give solid N-(4-chloro-5-(trifluoromethyl)-1H-pyrrolo[2,3-b]pyridin-3-yl)pyrazine-2-carboxamide (0.23 g, 79% yield).

Workup

  1. stirringthe reaction was stirred for 10 minutes
  2. filtrationthe reaction was filtered
  3. filtrationMeOH and filtered

Sources & evidence

ORD record
ord-99d26ae5c8e940c29c82feade139e767
Source dataset
uspto-grants-2013_10
Patent number
US08545897B2

Reaction notes

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