Technology Process of 6-{4-[4-(2-bromoethoxy)phenyl]piperidin-1-yl}-3-(trifluoromethyl)[1,2,4]triazolo[4,3-b]pyridazine
There total 4 articles about 6-{4-[4-(2-bromoethoxy)phenyl]piperidin-1-yl}-3-(trifluoromethyl)[1,2,4]triazolo[4,3-b]pyridazine which
guide to synthetic route it.
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synthetic route:
- Guidance literature:
-
With
lithium bromide;
In
1,4-dioxane;
at 100 ℃;
for 4h;
- Guidance literature:
-
Multi-step reaction with 7 steps
1.1: lithium hexamethyldisilazane / tetrahydrofuran / 2.5 h / -78 °C / Inert atmosphere
1.2: 17.5 h / -78 - 20 °C / Inert atmosphere
2.1: sodium carbonate / (1,1'-bis(diphenylphosphino)ferrocene)palladium(II) dichloride / 1,4-dioxane; water / 1 h / 80 °C / Inert atmosphere
3.1: hydrogen / 5%-palladium/activated carbon / methanol / 2 h / 25 °C / 3750.38 Torr
4.1: N-ethyl-N,N-diisopropylamine / N,N-dimethyl-formamide / 1 h / 80 °C
5.1: potassium carbonate / N,N-dimethyl-formamide / 20.17 h / 80 °C / Inert atmosphere
6.1: triethylamine / dichloromethane / 0 - 20 °C / Inert atmosphere
7.1: lithium bromide / 1,4-dioxane / 4 h / 100 °C
With
hydrogen; sodium carbonate; potassium carbonate; triethylamine; N-ethyl-N,N-diisopropylamine; lithium bromide; lithium hexamethyldisilazane;
(1,1'-bis(diphenylphosphino)ferrocene)palladium(II) dichloride; 5%-palladium/activated carbon;
In
tetrahydrofuran; 1,4-dioxane; methanol; dichloromethane; water; N,N-dimethyl-formamide;
- Guidance literature:
-
Multi-step reaction with 5 steps
1: hydrogen / 5%-palladium/activated carbon / methanol / 2 h / 25 °C / 3750.38 Torr
2: N-ethyl-N,N-diisopropylamine / N,N-dimethyl-formamide / 1 h / 80 °C
3: potassium carbonate / N,N-dimethyl-formamide / 20.17 h / 80 °C / Inert atmosphere
4: triethylamine / dichloromethane / 0 - 20 °C / Inert atmosphere
5: lithium bromide / 1,4-dioxane / 4 h / 100 °C
With
hydrogen; potassium carbonate; triethylamine; N-ethyl-N,N-diisopropylamine; lithium bromide;
5%-palladium/activated carbon;
In
1,4-dioxane; methanol; dichloromethane; N,N-dimethyl-formamide;