Multi-step reaction with 7 steps
1.1: triethylamine / N,N-dimethyl-formamide / 1.5 h / 80 °C
1.2: 3 h / 20 °C
2.1: hydrogenchloride / methanol; water / 0.17 h / 20 °C
3.1: sodium methylate / methanol / 0.25 h / 20 °C
4.1: 4,5-bis(diphenylphos4,5-bis(diphenylphosphino)-9,9-dimethylxanthenephino)-9,9-dimethylxanthene; tris-(dibenzylideneacetone)dipalladium(0); N-ethyl-N,N-diisopropylamine / 1,4-dioxane / 17 h / Reflux
5.1: N-benzyl-N,N,N-triethylammonium chloride; potassium hydroxide / dichloromethane; water / 4 h / 20 °C
6.1: benzotriazol-1-ol; 1-ethyl-(3-(3-dimethylamino)propyl)-carbodiimide hydrochloride / N,N-dimethyl-formamide / 5.5 h / 20 °C
7.1: trifluoroacetic acid / dichloromethane / 3.5 h / 0 °C
With
hydrogenchloride; tris-(dibenzylideneacetone)dipalladium(0); N-benzyl-N,N,N-triethylammonium chloride; sodium methylate; benzotriazol-1-ol; 1-ethyl-(3-(3-dimethylamino)propyl)-carbodiimide hydrochloride; triethylamine; N-ethyl-N,N-diisopropylamine; 4,5-bis(diphenylphos4,5-bis(diphenylphosphino)-9,9-dimethylxanthenephino)-9,9-dimethylxanthene; trifluoroacetic acid; potassium hydroxide;
In
1,4-dioxane; methanol; dichloromethane; water; N,N-dimethyl-formamide;
DOI:10.1038/ja.2017.114