Acetic Acid → 3-(3-methoxy-4-{[(5-methyl-2-furyl)methyl]amino}phenyl)-1-{1-[(1-methyl-1H-2-imidazolyl)methyl]-4-piperidyl}-1H-pyrazolo[3,4-d]pyrimidin-4-amine

HRID 897810Notes

Reaction equation

HRID 897810 reaction equation
[CH3:1][O:2][C:3]1[CH:4]=[C:5]([C:17]2[C:25]3[C:20](=[N:21][CH:22]=[N:23][C:24]=3[NH2:26])[N:19]([CH:27]3[CH2:32][CH2:31][NH:30][CH2:29][CH2:28]3)[N:18]=2)[CH:6]=[CH:7][C:8]=1[NH:9][CH2:10][C:11]1[O:12][C:13]([CH3:16])=[CH:14][CH:15]=1.[CH3:33][N:34]1[CH:38]=[CH:37][N:36]=[C:35]1[CH:39]=O.C(O)(=O)C.C(O[BH-](OC(=O)C)OC(=O)C)(=O)C.[Na+]>ClC(Cl)C>[CH3:1][O:2][C:3]1[CH:4]=[C:5]([C:17]2[C:25]3[C:20](=[N:21][CH:22]=[N:23][C:24]=3[NH2:26])[N:19]([CH:27]3[CH2:32][CH2:31][N:30]([CH2:39][C:35]4[N:34]([CH3:33])[CH:38]=[CH:37][N:36]=4)[CH2:29][CH2:28]3)[N:18]=2)[CH:6]=[CH:7][C:8]=1[NH:9][CH2:10][C:11]1[O:12][C:13]([CH3:16])=[CH:14][CH:15]=1

Participants

6

Reactant 4

HCID 176Acetic AcidHCID 1395751-Methyl-2-imidazolecarboxaldehydeHCID 5049666Sodium triacetoxyborohydrideHCID 223470923-(3-methoxy-4-{[(5-methyl-2-furyl)methyl]amino}phenyl)-1-(4-piperidyl)-1H-pyrazolo[3,4-d]pyrimidin-4-amine

Product 1

HCID 223470863-(3-methoxy-4-{[(5-methyl-2-furyl)methyl]amino}phenyl)-1-{1-[(1-methyl-1H-2-imidazolyl)methyl]-4-piperidyl}-1H-pyrazolo[3,4-d]pyrimidin-4-amineYield 60%

Reagents, catalysts & solvents 1

HCID 63651,1-DichloroethaneSolvent

Procedure

A mixture 3-(3-methoxy-4-{[(5-methyl-2-furyl)methyl]amino}phenyl)-1-(4-piperidyl)-1H-pyrazolo[3,4-d]pyrimidin-4-amine (0.045 g, 0.0001 mol), 1-methyl-2-imidazole carboxaldehyde (0.011 g, 0.00011 mol), and acetic acid (0.018 g, 0.0003 mol) in dichloroethane (4 mL) was stirred at room temperature under an atmosphere of nitrogen for 1.5 hrs. Sodium triacetoxyborohydride (0.064 g, 0.0003 mol) was added into the mixture and the mixture was stirred at ambient temperature under an atmosphere of nitrogen for 18 hours. The reaction was quenched with an aqueous 5 N solution of sodium hydroxide. The solvents were removed under reduced pressure, and the residue was partitioned between water and dichloromethane. The organic layer was washed with water and brine. The solvents were removed under reduced pressure. The residue was purified by RP-HPLC (Hypersilprep HS C18, 8 μm, 250×21.1 mm; 5%-100% over 35 min with 0.1 M ammonium acetate, 21 mL/min) to yield 3-(3-methoxy-4-{[(5-methyl-2-furyl)methyl]amino}phenyl)-1-{1-[(1-methyl-1H-2-imidazolyl)methyl]-4-piperidyl}-1H-pyrazolo[3,4-d]pyrimidin-4-amine (0.03 g, 0.00006 mol).

Workup

  1. customThe reaction was quenched with an aqueous 5 N solution of sodium hydroxide
  2. customThe solvents were removed under reduced pressure
  3. customthe residue was partitioned between water and dichloromethane
  4. washThe organic layer was washed with water and brine
  5. customThe solvents were removed under reduced pressure
  6. customThe residue was purified by RP-HPLC (Hypersilprep HS C18, 8 μm, 250×21.1 mm; 5%-100% over 35 min with 0.1 M ammonium acetate, 21 mL/min)

Sources & evidence

ORD record
ord-b5935578714e4a19af9b74a0a0979072
Source dataset
uspto-grants-2005_07
Patent number
US06921763B2

Reaction notes

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