Acetic Acid → HCID 59473817, compound

HRID 2069718Notes

Reaction equation

HRID 2069718 reaction equation
[C:1]([O:5][C:6](=[O:25])[N:7]([C:16]1[C:17](=[O:24])[N:18]([CH3:23])[CH:19]=[C:20]([Br:22])[CH:21]=1)[C:8]1[CH:13]=[CH:12][C:11]([CH:14]=O)=[CH:10][N:9]=1)([CH3:4])([CH3:3])[CH3:2].[CH3:26][N:27]1[CH2:32][CH2:31][NH:30][CH2:29][CH2:28]1.C(O[BH-](OC(=O)C)OC(=O)C)(=O)C.[Na+].C(O)(=O)C>C(Cl)Cl>[C:1]([O:5][C:6](=[O:25])[N:7]([C:16]1[C:17](=[O:24])[N:18]([CH3:23])[CH:19]=[C:20]([Br:22])[CH:21]=1)[C:8]1[CH:13]=[CH:12][C:11]([CH2:14][N:30]2[CH2:31][CH2:32][N:27]([CH3:26])[CH2:28][CH2:29]2)=[CH:10][N:9]=1)([CH3:2])([CH3:4])[CH3:3]

Participants

6

Reactant 4

HCID 176Acetic AcidHCID 531671-MethylpiperazineHCID 5049666Sodium triacetoxyborohydrideHCID 59473778HCID 59473778, compound

Product 1

HCID 59473817HCID 59473817, compoundYield 89.5%

Reagents, catalysts & solvents 1

HCID 6344DichloromethaneSolvent2×

Procedure

To a solution of (5-bromo-1-methyl-2-oxo-1,2-dihydro-pyridin-3-yl)-(5-formyl-pyridin-2-yl)-carbamic acid tert-butyl ester (1.0 g, 2.45 mmol) in DCM (49 ml) was added 1-methylpiperazine (491 mg, 4.9 mmol), sodium triacetoxyborohydride (1.3 g, 6.12 mmol) and acetic acid (294 mg, 4.9 mmol). The reaction mixture was heated to 40 degrees centigrade and stirred overnight. The reaction was diluted with DCM, washed with saturated aqueous sodium bicarbonate, dried and concentrated. The crude product was purified by flash chromatography using a gradient of 0% to 20% methanol in DCM to give 1.08 g (89.5%) of (5-bromo-1-methyl-2-oxo-1,2-dihydro-pyridin-3-yl)-[5-(4-methyl-piperazin-1-ylmethyl)-pyridin-2-yl]-carbamic acid tert-butyl ester.

Workup

  1. temperatureThe reaction mixture was heated to 40 degrees centigrade
  2. washwashed with saturated aqueous sodium bicarbonate
  3. customdried
  4. concentrationconcentrated
  5. customThe crude product was purified by flash chromatography

Sources & evidence

ORD record
ord-693550f3334d479b9d43a859cf86c040
Source dataset
uspto-grants-2012_10
Patent number
US08299077B2

Reaction notes

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