1-(6-Chloropyridine-3-carbonyl)-4-methylpiperazine → 5-Bromo-1-methyl-3-[5-(4-methyl-piperazine-1-carbonyl)-pyridin-2-ylamino]-1H-pyridin-2-one

HRID 1916060Notes

Reaction equation

HRID 1916060 reaction equation
Cl[C:2]1[N:7]=[CH:6][C:5]([C:8]([N:10]2[CH2:15][CH2:14][N:13]([CH3:16])[CH2:12][CH2:11]2)=[O:9])=[CH:4][CH:3]=1.[NH2:17][C:18]1[C:19](=[O:26])[N:20]([CH3:25])[CH:21]=[C:22]([Br:24])[CH:23]=1.[Na]>CN(C)C=O>[Br:24][C:22]1[CH:23]=[C:18]([NH:17][C:2]2[CH:3]=[CH:4][C:5]([C:8]([N:10]3[CH2:15][CH2:14][N:13]([CH3:16])[CH2:12][CH2:11]3)=[O:9])=[CH:6][N:7]=2)[C:19](=[O:26])[N:20]([CH3:25])[CH:21]=1

Participants

5

Reactant 3

HCID 9020401-(6-Chloropyridine-3-carbonyl)-4-methylpiperazineHCID 5360545SodiumHCID 529112683-Amino-5-bromo-1-methyl-1,2-dihydropyridin-2-one

Product 1

HCID 592164415-Bromo-1-methyl-3-[5-(4-methyl-piperazine-1-carbonyl)-pyridin-2-ylamino]-1H-pyridin-2-oneYield 26%

Reagents, catalysts & solvents 1

HCID 6228DimethylformamideSolvent

Procedure

To a solution of (6-Chloro-pyridin-3-yl)-(4-methyl-piperazin-1-yl)-methanone (2.00 g, 7.46 mmol) in 10 mL dimethylformamide was added 3-Amino-5-bromo-1-methyl-1H-pyridin-2-one (1.80 g, 8.95 mmol) and sodium hydiride (537 mg, 22.4 mmol). After stirring for 18 hours, this was quenched with water. This was extracted with ethylacetate. The ethylacetate layer was dried over anhydrous sodium sulfate, concentrated in vacuo, and purified by flash chromatography (gradient elution 0 to 5% methanol/dichloromethane) to yield 5-Bromo-1-methyl-3-[5-(4-methyl-piperazine-1-carbonyl)-pyridin-2-ylamino]-1H-pyridin-2-one (900 mg, 1.94 mmol). MS (ESI) 406.0 (M+H)+.

Workup

  1. customthis was quenched with water
  2. extractionThis was extracted with ethylacetate
  3. dry with materialThe ethylacetate layer was dried over anhydrous sodium sulfate
  4. concentrationconcentrated in vacuo
  5. custompurified by flash chromatography (gradient elution 0 to 5% methanol/dichloromethane)

Sources & evidence

ORD record
ord-f1cd3f6b025e4d55a2d81f8ef684a062
Source dataset
uspto-grants-2013_12
Patent number
US08618098B2

Reaction notes

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