1-Methylpiperazine → 2-Chloro-5-((4-methylpiperazin-1-yl)methyl)pyrazine

HRID 1526288Notes

Reaction equation

HRID 1526288 reaction equation
C(O[BH-](OC(=O)C)OC(=O)C)(=O)C.[Na+].[Cl:15][C:16]1[N:17]=[CH:18][C:19]([CH:22]=O)=[N:20][CH:21]=1.[CH3:24][N:25]1[CH2:30][CH2:29][NH:28][CH2:27][CH2:26]1.C(=O)([O-])O.[Na+]>C(#N)C>[Cl:15][C:16]1[CH:21]=[N:20][C:19]([CH2:22][N:28]2[CH2:29][CH2:30][N:25]([CH3:24])[CH2:26][CH2:27]2)=[CH:18][N:17]=1

Participants

6

Reactant 4

HCID 531671-MethylpiperazineHCID 516892Sodium BicarbonateHCID 5049666Sodium triacetoxyborohydrideHCID 216980675-Chloropyrazine-2-carbaldehyde

Product 1

HCID 1030540012-Chloro-5-((4-methylpiperazin-1-yl)methyl)pyrazine

Reagents, catalysts & solvents 1

HCID 6342AcetonitrileSolvent

Procedure

Sodium triacetoxyborohydride (870 mg) was added to a solution of 5-chloropyrazine-2-carbaldehyde (390 mg) and 1-methylpiperazine (0.335 mL) in acetonitrile (10 mL) at 0° C. The reaction mixture was stirred at room temperature for 4 hr. To the reaction mixture was added saturated aqueous sodium hydrogen carbonate solution, and the mixture was extracted with ethyl acetate. The obtained organic layer was washed successively with water and saturated brine, and dried over anhydrous magnesium sulfate, and the solvent was evaporated under reduced pressure. The residue was purified by silica gel column chromatography (basic silica gel, hexane/ethyl acetate) to give the title compound (285 mg).

Workup

  1. extractionthe mixture was extracted with ethyl acetate
  2. washThe obtained organic layer was washed successively with water and saturated brine
  3. dry with materialdried over anhydrous magnesium sulfate
  4. customthe solvent was evaporated under reduced pressure
  5. customThe residue was purified by silica gel column chromatography (basic silica gel, hexane/ethyl acetate)

Sources & evidence

ORD record
ord-56f3bbd6b62c4654a9186ee211039636
Source dataset
uspto-grants-2015_07
Patent number
US09085578B2

Reaction notes

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