Hydrochloric Acid → 5-(3-((7-methoxyquinolin-4-yloxy)methyl)-[1,2,4]triazolo[4,3-b]pyridazin-6-yl)pyridin-2(1H)-one
Reaction equation
F[C:2]1[N:7]=[CH:6][C:5]([C:8]2[CH:9]=[CH:10][C:11]3[N:12]([C:14]([CH2:17][O:18][C:19]4[C:28]5[C:23](=[CH:24][C:25]([O:29][CH3:30])=[CH:26][CH:27]=5)[N:22]=[CH:21][CH:20]=4)=[N:15][N:16]=3)[N:13]=2)=[CH:4][CH:3]=1.Cl.C(N(CC)CC)C.[O:39]1CCOCC1>>[CH3:30][O:29][C:25]1[CH:24]=[C:23]2[C:28]([C:19]([O:18][CH2:17][C:14]3[N:12]4[N:13]=[C:8]([C:5]5[CH:4]=[CH:3][C:2](=[O:39])[NH:7][CH:6]=5)[CH:9]=[CH:10][C:11]4=[N:16][N:15]=3)=[CH:20][CH:21]=[N:22]2)=[CH:27][CH:26]=1Participants
5
Reactant 4
Product 1
Conditions
- Temperature
- 100 °C
Procedure
4-((6-(6-Fluoropyridin-3-yl)-[1,2,4]triazolo[4,3-b]pyridazin-3-yl)methoxy)-7-methoxyquinoline (0.121 g, 0.30 mmol) was suspended in dioxane (1 mL) then added 3M aqueous hydrochloric acid (2.0 ml, 6.0 mmol). The reaction mixture was then heated at 100° C. for 1 hour. The mixture was concentrated under vacuum and the remaining solid was dissolved in methanol (4 mL) then added triethylamine (0.42 ml, 3.0 mmol). The mixture was stirred at room temperature for 1 hour then concentrated under vacuum. The sample was purified by flash chromatography eluting with 15% 7N NH3 in methanol/dichloromethane to afford 5-(3-((7-methoxyquinolin-4-yloxy)methyl)-[1,2,4]triazolo[4,3-b]pyridazin-6-yl)pyridin-2(1H)-one as a pale orange solid.
Workup
- concentrationThe mixture was concentrated under vacuum
- dissolutionthe remaining solid was dissolved in methanol (4 mL)
- concentrationthen concentrated under vacuum
- customThe sample was purified by flash chromatography
- washeluting with 15% 7N NH3 in methanol/dichloromethane
Sources & evidence
- ORD record
- ord-e641f57657234b849389a8f5a0ef0bb7
- Source dataset
- uspto-grants-2013_09
- Patent number
- US08524900B2
Reaction notes
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