Multi-step reaction with 7 steps
1: sodium hydride / tetrahydrofuran; dimethyl sulfoxide / 12 h / 20 °C
2: copper(l) iodide; cesium iodide; isopentyl nitrite / 1,2-dimethoxyethane / 6 h / 70 °C
3: palladium diacetate; potassium carbonate; 2,2'-bis-(diphenylphosphino)-1,1'-binaphthyl / N,N-dimethyl-formamide / 6 h / 80 °C
4: potassium hydroxide / ethanol / 3 h / 80 °C
5: N-hydroxybenzotriazole ammonium salt; 1-ethyl-(3-(3-dimethylamino)propyl)-carbodiimide hydrochloride; triethylamine / dichloromethane; N,N-dimethyl-formamide / 24 h / 20 °C
6: tris-(dibenzylideneacetone)dipalladium(0); lithium hexamethyldisilazane; DavePhos / tetrahydrofuran / 8 h / 80 °C
7: hydrogenchloride / 1,4-dioxane / 6 h / 20 °C
With
hydrogenchloride; tris-(dibenzylideneacetone)dipalladium(0); copper(l) iodide; N-hydroxybenzotriazole ammonium salt; palladium diacetate; sodium hydride; potassium carbonate; 2,2'-bis-(diphenylphosphino)-1,1'-binaphthyl; 1-ethyl-(3-(3-dimethylamino)propyl)-carbodiimide hydrochloride; triethylamine; potassium hydroxide; cesium iodide; lithium hexamethyldisilazane; DavePhos; isopentyl nitrite;
In
tetrahydrofuran; 1,4-dioxane; 1,2-dimethoxyethane; ethanol; dichloromethane; dimethyl sulfoxide; N,N-dimethyl-formamide;
DOI:10.1016/j.bmcl.2011.11.065