Iodoethane → 6-{6-[1-(1-Ethyl-piperidin-4-yl)-1H-pyrazol-4-yl]-imidazo[1,2-b]pyridazin-3-ylmethyl}-7-fluoro-quinoline

HRID 69189Notes

Reaction equation

HRID 69189 reaction equation
[F:1][C:2]1[CH:11]=[C:10]2[C:5]([CH:6]=[CH:7][CH:8]=[N:9]2)=[CH:4][C:3]=1[CH2:12][C:13]1[N:17]2[N:18]=[C:19]([C:22]3[CH:23]=[N:24][N:25]([CH:27]4[CH2:32][CH2:31][NH:30][CH2:29][CH2:28]4)[CH:26]=3)[CH:20]=[CH:21][C:16]2=[N:15][CH:14]=1.[CH2:33](I)[CH3:34].C([O-])([O-])=O.[Cs+].[Cs+]>O1CCOCC1.CCOC(C)=O>[CH2:33]([N:30]1[CH2:31][CH2:32][CH:27]([N:25]2[CH:26]=[C:22]([C:19]3[CH:20]=[CH:21][C:16]4[N:17]([C:13]([CH2:12][C:3]5[CH:4]=[C:5]6[C:10](=[CH:11][C:2]=5[F:1])[N:9]=[CH:8][CH:7]=[CH:6]6)=[CH:14][N:15]=4)[N:18]=3)[CH:23]=[N:24]2)[CH2:28][CH2:29]1)[CH3:34]

Participants

6

Reactant 3

HCID 6340IodoethaneHCID 10796Cesium carbonateHCID 579174297-fluoro-6-[6-(1-piperidin-4-yl-1H-pyrazol-4-yl)imidazo[1,2-b]pyridazin-3-ylmethyl]-quinoline

Product 1

HCID 579172656-{6-[1-(1-Ethyl-piperidin-4-yl)-1H-pyrazol-4-yl]-imidazo[1,2-b]pyridazin-3-ylmethyl}-7-fluoro-quinoline

Reagents, catalysts & solvents 2

HCID 8857Ethyl AcetateSolventHCID 312751,4-DioxaneSolvent

Procedure

A mixture of 7-fluoro-6-[6-(1-piperidin-4-yl-1H-pyrazol-4-yl)-imidazo[1,2-b]pyridazin-3-ylmethyl]-quinoline (Example 180, 50 mg, 0.117 mmol) and ethyliodide (19 μL, 0.234 mmol) in dioxane (1 mL) was stirred at rt for 2 h. Cs2CO3 (19 mg, 0.059 mmol) was then added and the RM was stirred at rt for 5 h more. The mixture was diluted with EtOAc and washed with NaHCO3 and brine. The organic layer was dried over Na2SO4, filtered and concentrated. The residue was purified by flash chromatography (CombiFlash® Companion System®, with a 4 g RediSep® silica gel column, DCM/(DCM/MeOH 9:1+NH3)=100:0→0:100) to afford the title compound as a foam (tR 3.10 min (conditions 3), MH+=456.2, 1H-NMR in DMSO-d6: 8.84 (m, 1H); 8.50 (s, 1H); 8.34 (m, 1H); 8.08 (m, 2H); 8.04 (d, 1H); 7.76 (d, 1H); 7.60 (s, 1H); 7.53 (d, 1H); 7.47 (dd, 1H); 4.55 (s, 2H); 4.18 (m, 1H); 2.96 (m, 2H); 2.35 (q, 2H); 1.97 (m, 6H); 1.01 (t, 3H)).

Workup

  1. stirringthe RM was stirred at rt for 5 h more
  2. washwashed with NaHCO3 and brine
  3. dry with materialThe organic layer was dried over Na2SO4
  4. filtrationfiltered
  5. concentrationconcentrated
  6. customThe residue was purified by flash chromatography (CombiFlash® Companion System®

Sources & evidence

ORD record
ord-5aad30ef219644d1bade5f3545aea4fa
Source dataset
uspto-grants-2014_09
Patent number
US08822468B2

Reaction notes

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