Nitrogen → 1-(4-methoxybenzyl)-3-methyl-N-(4-((4-methylpiperazin-1-yl)methyl)phenyl)-1H-pyrazolo[3,4-b]pyridin-5-amine

HRID 715053Notes

Reaction equation

HRID 715053 reaction equation
Br[C:2]1[CH:3]=[C:4]2[C:10]([CH3:11])=[N:9][N:8]([CH2:12][C:13]3[CH:18]=[CH:17][C:16]([O:19][CH3:20])=[CH:15][CH:14]=3)[C:5]2=[N:6][CH:7]=1.[CH3:21][N:22]1[CH2:27][CH2:26][N:25]([CH2:28][C:29]2[CH:35]=[CH:34][C:32]([NH2:33])=[CH:31][CH:30]=2)[CH2:24][CH2:23]1.N#N.C(O[K])(C)(C)C.C1C=CC(P(C2C(C3C(P(C4C=CC=CC=4)C4C=CC=CC=4)=CC=C4C=3C=CC=C4)=C3C(C=CC=C3)=CC=2)C2C=CC=CC=2)=CC=1>O1CCOCC1.C(Cl)(Cl)Cl.C1C=CC(/C=C/C(/C=C/C2C=CC=CC=2)=O)=CC=1.C1C=CC(/C=C/C(/C=C/C2C=CC=CC=2)=O)=CC=1.C1C=CC(/C=C/C(/C=C/C2C=CC=CC=2)=O)=CC=1.[Pd].[Pd]>[CH3:20][O:19][C:16]1[CH:17]=[CH:18][C:13]([CH2:12][N:8]2[C:5]3=[N:6][CH:7]=[C:2]([NH:33][C:32]4[CH:31]=[CH:30][C:29]([CH2:28][N:25]5[CH2:24][CH2:23][N:22]([CH3:21])[CH2:27][CH2:26]5)=[CH:35][CH:34]=4)[CH:3]=[C:4]3[C:10]([CH3:11])=[N:9]2)=[CH:14][CH:15]=1

Participants

9

Reactant 5

HCID 947NitrogenHCID 634876Binap, (A+-)-HCID 31539964-((4-Methylpiperazin-1-yl)methyl)anilineHCID 578563335-bromo-1-(4-methoxybenzyl)-3-methyl-1H-pyrazolo[3,4-b]pyridineHCID 178418922HCID 178418922, compound

Product 1

HCID 683885461-(4-methoxybenzyl)-3-methyl-N-(4-((4-methylpiperazin-1-yl)methyl)phenyl)-1H-pyrazolo[3,4-b]pyridin-5-amine

Reagents, catalysts & solvents 3

HCID 9811564Bis(dibenzylideneacetone)palladiumCatalystHCID 6212ChloroformSolventHCID 312751,4-DioxaneSolvent

Conditions

Temperature
90 °C

Procedure

A stirred solution of 5-bromo-1-(4-methoxybenzyl)-3-methyl-1H-pyrazolo[3,4-b]pyridine (7) (50 mg, 0.150 mmol) and 4-((4-methylpiperazin-1-yl)methyl)aniline (165) (30 mg, 0.165 mmol, 1.1 eq) in 1,4-dioxane (10 mL) was degassed and purged with N2 for 10 min. tert-BuOK (50 mg, 0.451 mmol, 3.0 eq) was added and the reaction mixture was purged and degassed again. To this reaction mixture was added ±BINAP (1.8 mg, 0.00301 mmol, 0.01 eq) and Pd2(dba)3 (5 mg, 0.0012 mmol, 0.04 eq) and the resulting reaction was heated at 90° C. for 12 hrs in sealed tube condition. After completion of the reaction the contents were cooled and diluted with CHCl3 and filtered through Celite bed. The CHCl3 layer was completely distilled off to get the crude product. The crude was passed through 100-200 mesh silica gel, eluting the pure compound 1-(4-methoxybenzyl)-3-methyl-N-(4-((4-methylpiperazin-1-yl)methyl)phenyl)-1H-pyrazolo[3,4-b]pyridin-5-amine 166 obtained with 6% MeOH in CH2Cl2 as an off-white coloured solid in 30 mg quantity.

Workup

  1. additionwas added
  2. customthe reaction mixture was purged
  3. customdegassed again
  4. customthe resulting reaction
  5. customAfter completion of the reaction the contents
  6. temperaturewere cooled
  7. filtrationfiltered through Celite bed
  8. distillationThe CHCl3 layer was completely distilled off
  9. customto get the crude product
  10. washeluting the pure compound 1-(4-methoxybenzyl)-3-methyl-N-(4-((4-methylpiperazin-1-yl)methyl)phenyl)-1H-pyrazolo[3,4-b]pyridin-5-amine 166
  11. customobtained with 6% MeOH in CH2Cl2 as an off-white coloured solid in 30 mg quantity

Sources & evidence

ORD record
ord-90eb10e393c448a4aaff3773dbc6c66d
Source dataset
uspto-grants-2015_11
Patent number
US09187473B2

Reaction notes

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