Dimethylformamide → 6-cyano-N-[6-(3-{[3-(1-cyanocyclopropyl)benzoyl]amino}phenoxy)imidazo[1,2-b]pyridazin-2-yl]nicotinamide

HRID 2391538Notes

Reaction equation

HRID 2391538 reaction equation
Cl[C:2]1[CH:40]=[CH:39][C:5]([C:6]([NH:8][C:9]2[N:10]=[C:11]3[CH:16]=[CH:15][C:14]([O:17][C:18]4[CH:23]=[CH:22][CH:21]=[C:20]([NH:24][C:25](=[O:37])[C:26]5[CH:31]=[CH:30][CH:29]=[C:28]([C:32]6([C:35]#[N:36])[CH2:34][CH2:33]6)[CH:27]=5)[CH:19]=4)=[N:13][N:12]3[CH:38]=2)=[O:7])=[CH:4][N:3]=1.C(=O)([O-])O.[Na+].[CH3:46][N:47](C)C=O>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].[C-]#N.[Zn+2].[C-]#N>[C:46]([C:2]1[CH:40]=[CH:39][C:5]([C:6]([NH:8][C:9]2[N:10]=[C:11]3[CH:16]=[CH:15][C:14]([O:17][C:18]4[CH:23]=[CH:22][CH:21]=[C:20]([NH:24][C:25](=[O:37])[C:26]5[CH:31]=[CH:30][CH:29]=[C:28]([C:32]6([C:35]#[N:36])[CH2:34][CH2:33]6)[CH:27]=5)[CH:19]=4)=[N:13][N:12]3[CH:38]=2)=[O:7])=[CH:4][N:3]=1)#[N:47]

Participants

6

Reactant 3

HCID 6228DimethylformamideHCID 516892Sodium BicarbonateHCID 575057506-chloro-N-[6-(3-{[3-(1-cyanocyclopropyl)benzoyl]amino}phenoxy)imidazo[1,2-b]pyridazin-2-yl]nicotinamide

Product 1

HCID 575057656-cyano-N-[6-(3-{[3-(1-cyanocyclopropyl)benzoyl]amino}phenoxy)imidazo[1,2-b]pyridazin-2-yl]nicotinamideYield 47%

Reagents, catalysts & solvents 2

HCID 11186Zinc cyanide (Zn(CN)2)CatalystHCID 9811564Bis(dibenzylideneacetone)palladiumCatalyst

Conditions

Temperature
100 °C

Procedure

A mixture of 6-chloro-N-[6-(3-{[3-(1-cyanocyclopropyl)benzoyl]amino}phenoxy)imidazo[1,2-b]pyridazin-2-yl]nicotinamide (120 mg, 0.201 mmol), tetrakis(triphenylphosphine)palladium (0) (58 mg, 50.4 mol), zinc cyanide (26 mg, 0.225 mmol) and N,N-dimethylformamide (2.5 mL) was stirred with heating under an argon atmosphere at 100° C. for 6.5 hr. After the reaction mixture was allowed to cool to room temperature, saturated aqueous sodium hydrogencarbonate solution was added to the 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 silica gel column chromatography (ethyl acetate/hexane=50/50→100/0) to give the title compound (51 mg, 47%) as a yellow 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 silica gel column chromatography (ethyl acetate/hexane=50/50→100/0)

Sources & evidence

ORD record
ord-056b74503e1741719ee5a2102dac33ca
Source dataset
uspto-grants-2012_09
Patent number
US08273741B2

Reaction notes

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