Hydrochloric Acid → 1-(3-(1-(7-Fluoroquinolin-6-yl)ethyl)imidazo[1,2-b]pyridazin-6-yl)ethanone

HRID 456087Notes

Reaction equation

HRID 456087 reaction equation
Cl[C:2]1[CH:3]=[CH:4][C:5]2[N:6]([C:8]([CH:11]([C:13]3[CH:14]=[C:15]4[C:20](=[CH:21][C:22]=3[F:23])[N:19]=[CH:18][CH:17]=[CH:16]4)[CH3:12])=[CH:9][N:10]=2)[N:7]=1.C([Sn](CCCC)(CCCC)[C:29]([O:31]CC)=[CH2:30])CCC.Cl.O>CN(C=O)C.[Pd].C1(P(C2C=CC=CC=2)C2C=CC=CC=2)C=CC=CC=1.C1(P(C2C=CC=CC=2)C2C=CC=CC=2)C=CC=CC=1.C1(P(C2C=CC=CC=2)C2C=CC=CC=2)C=CC=CC=1.C1(P(C2C=CC=CC=2)C2C=CC=CC=2)C=CC=CC=1>[F:23][C:22]1[CH:21]=[C:20]2[C:15]([CH:16]=[CH:17][CH:18]=[N:19]2)=[CH:14][C:13]=1[CH:11]([C:8]1[N:6]2[N:7]=[C:2]([C:29](=[O:31])[CH3:30])[CH:3]=[CH:4][C:5]2=[N:10][CH:9]=1)[CH3:12]

Participants

7

Reactant 4

HCID 313Hydrochloric AcidHCID 962WaterHCID 619414Stannane, tributyl(1-ethoxyethenyl)-HCID 581475216-(1-(6-Chloroimidazo[1,2-b]pyridazin-3-yl)ethyl)-7-fluoroquinoline

Product 1

HCID 581905731-(3-(1-(7-Fluoroquinolin-6-yl)ethyl)imidazo[1,2-b]pyridazin-6-yl)ethanone

Reagents, catalysts & solvents 2

HCID 11979704Tetrakis(triphenylphosphine)palladiumCatalystHCID 6228DimethylformamideSolvent

Conditions

Temperature
100 °C

Procedure

In a flask was charged with tetrakis-(triphenylphosphine)-palladium (46 mg, 0.040 mmol) under nitrogen. A solution of 6-(1-(6-chloroimidazo[1,2-b]pyridazin-3-yl)ethyl)-7-fluoroquinoline (130 mg, 0.40 mmol) in DMF (5 mL) was added. The system was purged with nitrogen gas three times and tributyl-(1-ethoxy-vinyl)-stannane (0.14 mL, 0.42 mmol) was added. The temperature was increased to 100° C. and stirred for 2 hrs. Then the reaction mixture was cooled to room temperature, 3N HCl was added and the mixture was stirred for additional 4 hrs. Water was added and the mixture was then extracted with EtOAc, dried over Na2SO4 and concentrated under reduced pressure. The residue was purified by column chromatography (3% to 10% MeOH in CH2Cl2) to afford 120 mg (yield: 90) of title compound. LCMS (method B): [MH]+=335, tR=2.41 min.

Workup

  1. additionwas added
  2. temperatureThen the reaction mixture was cooled to room temperature
  3. stirringthe mixture was stirred for additional 4 hrs
  4. extractionthe mixture was then extracted with EtOAc
  5. dry with materialdried over Na2SO4
  6. concentrationconcentrated under reduced pressure
  7. customThe residue was purified by column chromatography (3% to 10% MeOH in CH2Cl2)

Sources & evidence

ORD record
ord-08df1e1cd00648e09897fc867c4e650a
Source dataset
uspto-grants-2013_07
Patent number
US08497368B2

Reaction notes

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