1-Methylpiperazine → 3-(1-cyanocyclopropyl)-N-{3-[(2-{[(4-methylpiperazin-1-yl)acetyl]amino}imidazo[1,2-b]pyridazin-6-yl)oxy]phenyl}benzamide

HRID 1668219Notes

Reaction equation

HRID 1668219 reaction equation
Cl[CH2:2][C:3]([NH:5][C:6]1[N:7]=[C:8]2[CH:13]=[CH:12][C:11]([O:14][C:15]3[CH:16]=[C:17]([NH:21][C:22](=[O:34])[C:23]4[CH:28]=[CH:27][CH:26]=[C:25]([C:29]5([C:32]#[N:33])[CH2:31][CH2:30]5)[CH:24]=4)[CH:18]=[CH:19][CH:20]=3)=[N:10][N:9]2[CH:35]=1)=[O:4].[CH3:36][N:37]1[CH2:42][CH2:41][NH:40][CH2:39][CH2:38]1.C(=O)([O-])O.[Na+]>C(#N)C>[C:32]([C:29]1([C:25]2[CH:24]=[C:23]([CH:28]=[CH:27][CH:26]=2)[C:22]([NH:21][C:17]2[CH:18]=[CH:19][CH:20]=[C:15]([O:14][C:11]3[CH:12]=[CH:13][C:8]4[N:9]([CH:35]=[C:6]([NH:5][C:3](=[O:4])[CH2:2][N:40]5[CH2:41][CH2:42][N:37]([CH3:36])[CH2:38][CH2:39]5)[N:7]=4)[N:10]=3)[CH:16]=2)=[O:34])[CH2:31][CH2:30]1)#[N:33]

Participants

5

Reactant 3

HCID 531671-MethylpiperazineHCID 516892Sodium BicarbonateHCID 57505753N-[3-({2-[(chloroacetyl)amino]imidazo[1,2-b]pyridazin-6-yl}oxy)phenyl]-3-(1-cyanocyclopropyl)benzamide

Product 1

HCID 575057543-(1-cyanocyclopropyl)-N-{3-[(2-{[(4-methylpiperazin-1-yl)acetyl]amino}imidazo[1,2-b]pyridazin-6-yl)oxy]phenyl}benzamideYield 41%

Reagents, catalysts & solvents 1

HCID 6342AcetonitrileSolvent

Conditions

Temperature
80 °C

Procedure

A mixture of N-[3-({2-[(chloroacetyl)amino]imidazo[1,2-b]pyridazin-6-yl}oxy)phenyl]-3-(1-cyanocyclopropyl)benzamide (140 mg, 0.287 mmol), 1-methylpiperazine (1 mL) and acetonitrile (2 mL) was stirred with heating at 80° C. for 4 hr. After the reaction mixture was allowed to cool to room temperature, saturated aqueous sodium hydrogencarbonate solution was added to the reaction mixture, and the mixture was extracted with ethyl acetate. The extract was washed with saturated brine, dried over anhydrous magnesium sulfate, and filtrated. The solvent was evaporated under reduced pressure, and the residue was purified by NH silica gel column chromatography (ethyl acetate/hexane=0/100→100/0) to give the title compound (65 mg, 41%) as a white powder.

Workup

  1. temperatureto cool to room temperature
  2. extractionthe mixture was extracted with ethyl acetate
  3. washThe extract was washed with saturated brine
  4. dry with materialdried over anhydrous magnesium sulfate
  5. filtrationfiltrated
  6. customThe solvent was evaporated under reduced pressure
  7. customthe residue was purified by NH silica gel column chromatography (ethyl acetate/hexane=0/100→100/0)

Sources & evidence

ORD record
ord-4db883357b6547809099c8c7d1f77061
Source dataset
uspto-grants-2011_10
Patent number
US08044049B2

Reaction notes

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