Triethylamine → 1-((3-Bromofuran-2-yl)methyl)-4-methylpiperazine

HRID 2190257Notes

Reaction equation

HRID 2190257 reaction equation
[Br:1][C:2]1[CH:6]=[CH:5][O:4][C:3]=1[CH:7]=O.Cl.Cl.[CH3:11][N:12]1[CH2:17][CH2:16][NH:15][CH2:14][CH2:13]1.C(N(CC)CC)C.C(O[BH-](OC(=O)C)OC(=O)C)(=O)C.[Na+]>C(Cl)Cl.CCOC(C)=O>[Br:1][C:2]1[CH:6]=[CH:5][O:4][C:3]=1[CH2:7][N:15]1[CH2:16][CH2:17][N:12]([CH3:11])[CH2:13][CH2:14]1

Participants

7

Reactant 4

HCID 8471TriethylamineHCID 27347151-Methylpiperazine dihydrochlorideHCID 33672713-Bromo-2-furaldehydeHCID 5049666Sodium triacetoxyborohydride

Product 1

HCID 710660911-((3-Bromofuran-2-yl)methyl)-4-methylpiperazineYield 78%

Reagents, catalysts & solvents 2

HCID 6344DichloromethaneSolventHCID 8857Ethyl AcetateSolvent

Procedure

To a solution of 3-bromofuran-2-carbaldehyde (500 mg, 2.85 mmol), 1-methylpiperazine dihydrochloride (986 mg, 5.71 mmol) and triethylamine (1.5 mL, 11.4 mmol) in CH2Cl2 (10 mL) was added sodium triacetoxyborohydride (1.2 g, 5.71 mmol). The mixture was stirred at room temperature for 12 hours. The reaction mixture was diluted with EtOAc (100 mL). The organic phase was washed with aqueous NaHCO3 and brine then dried (MgSO4), filtered and concentrated to dryness. The residue was purified by column chromatography (silica, 0-10% MeOH in CH2Cl2) to afford the sub-title compound (570 mg, 78%).

Workup

  1. washThe organic phase was washed with aqueous NaHCO3 and brine
  2. dry with materialthen dried (MgSO4)
  3. filtrationfiltered
  4. concentrationconcentrated to dryness
  5. customThe residue was purified by column chromatography (silica, 0-10% MeOH in CH2Cl2)

Sources & evidence

ORD record
ord-c363176ef2d44bd8967264a4ecbacfe4
Source dataset
uspto-grants-2012_12
Patent number
US08324264B1

Reaction notes

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