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

HRID 1664041Notes

Reaction equation

HRID 1664041 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-3dbb07f7def143a4968bcf0b4eb6c321
Source dataset
uspto-grants-2011_10
Patent number
US08034812B2

Reaction notes

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