Multi-step reaction with 5 steps
1: dichloromethane / 1 h / Cooling
2: pyridine / 100 °C
3: caesium carbonate / 4,5-bis(diphenylphosphino)-9,9-dimethylxanthene; tris-(dibenzylideneacetone)dipalladium(0) / 1,4-dioxane / 22 h / 100 °C / Inert atmosphere
4: hydrogenchloride / diethyl ether / 20 °C
5: N-ethyl-N,N-diisopropylamine; 2,4,6-tripropyl-1,3,5,2,4,6-trioxatriphosphinane-2,4,6-trioxide / ethyl acetate; n-heptane; tetrahydrofuran; methanol / 60 h / 25 °C
With
pyridine; hydrogenchloride; caesium carbonate; 2,4,6-tripropyl-1,3,5,2,4,6-trioxatriphosphinane-2,4,6-trioxide; N-ethyl-N,N-diisopropylamine;
tris-(dibenzylideneacetone)dipalladium(0); 4,5-bis(diphenylphosphino)-9,9-dimethylxanthene;
In
tetrahydrofuran; 1,4-dioxane; methanol; diethyl ether; n-heptane; dichloromethane; ethyl acetate;