Hydrogen Peroxide → 3-{(dimethylamino)methyl}-4-{4-iodo-3-isopropyl-1H-pyrazolo[3,4-b]pyridin-1-yl}benzamide

HRID 1625256Notes

Reaction equation

HRID 1625256 reaction equation
[CH3:1][N:2]([CH2:4][C:5]1[CH:6]=[C:7]([CH:10]=[CH:11][C:12]=1[N:13]1[C:17]2=[N:18][CH:19]=[CH:20][C:21]([I:22])=[C:16]2[C:15]([CH:23]([CH3:25])[CH3:24])=[N:14]1)[C:8]#[N:9])[CH3:3].[OH:26]O.[OH-].[Na+].O>CS(C)=O>[CH3:3][N:2]([CH2:4][C:5]1[CH:6]=[C:7]([CH:10]=[CH:11][C:12]=1[N:13]1[C:17]2=[N:18][CH:19]=[CH:20][C:21]([I:22])=[C:16]2[C:15]([CH:23]([CH3:25])[CH3:24])=[N:14]1)[C:8]([NH2:9])=[O:26])[CH3:1]

Participants

6

Reactant 4

HCID 784Hydrogen PeroxideHCID 962WaterHCID 14798Sodium HydroxideHCID 675002783-{(dimethylamino)methyl}-4-{4-iodo-3-isopropyl-1H-pyrazolo[3,4-b]pyridin-1-yl}benzonitrile

Product 1

HCID 675015173-{(dimethylamino)methyl}-4-{4-iodo-3-isopropyl-1H-pyrazolo[3,4-b]pyridin-1-yl}benzamideYield 65%

Reagents, catalysts & solvents 1

HCID 679Dimethyl SulfoxideSolvent

Procedure

Compound (125a) (0.500 g), 2-picoline-borane complex (0.166 g), and dimethylamine (0.216 mL) were dissolved in acetic acid (1.0 mL) and methanol (10 mL), followed by stirring at room temperature for 12 hr. The reaction solution was concentrated, and the residue was purified by basic silica gel column chromatography (hexane/ethyl acetate) to obtain 3-{(dimethylamino)methyl}-4-{4-iodo-3-isopropyl-1H-pyrazolo[3,4-b]pyridin-1-yl}benzonitrile (0.213 g, 40%). This 3-{(dimethylamino)methyl}-4-{4-iodo-3-isopropyl-1H-pyrazolo[3,4-b]pyridin-1-yl}benzonitrile was dissolved in DMSO (1.6 mL), and a hydrogen peroxide solution (30 wt %) (0.060 mL) and a 4 mol % aqueous sodium hydroxide solution (0.132 mL) were added to the resulting solution, followed by stirring at room temperature for 20 min. Water was added to the reaction solution, and the precipitate was collected by filtration and was dried under reduced pressure to obtain 3-{(dimethylamino)methyl}-4-{4-iodo-3-isopropyl-1H-pyrazolo[3,4-b]pyridin-1-yl}benzamide (0.144 g, 65%). According to Example 97(2), compound (126) (64%) was prepared as a white solid using 3-{(dimethylamino)methyl}-4-{4-iodo-3-isopropyl-1H-pyrazolo[3,4-b]pyridin-1-yl}benzamide instead of compound (97a) and using 4-(1-methyl-1H-pyrazol-4-yl)-1H-imidazole hydrochloride instead of 4-phenyl-1H-imidazole.

Workup

  1. filtrationthe precipitate was collected by filtration
  2. customwas dried under reduced pressure

Sources & evidence

ORD record
ord-811640fe97ac4f0f8909ec810eb729cb
Source dataset
uspto-grants-2014_07
Patent number
US08779142B2

Reaction notes

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