Multi-step reaction with 6 steps
1.1: 4,5-bis(diphenylphosphino)-9,9-dimethylxanthene; caesium carbonate; tris-(dibenzylideneacetone)dipalladium(0) / 1,4-dioxane / 48 h / 100 °C / Inert atmosphere
2.1: thionyl chloride / dichloromethane; 1-methyl-pyrrolidin-2-one / 7 h / 0 - 20 °C
3.1: caesium carbonate / N,N-dimethyl-formamide / 16 h / 20 °C
4.1: sodium t-butanolate; 1,3-dibromo-5,5-dimethylimidazolidine-2,4-dione / tetrahydrofuran / 10 °C / Inert atmosphere
4.2: 1.33 h / 10 °C
5.1: potassium hydroxide; Oxone; water / methanol / 2 h / 20 °C / pH 10 - 11
6.1: trifluoroacetic acid / dichloromethane / 20 °C
With
Oxone; tris-(dibenzylideneacetone)dipalladium(0); thionyl chloride; 1,3-dibromo-5,5-dimethylimidazolidine-2,4-dione; water; caesium carbonate; 4,5-bis(diphenylphosphino)-9,9-dimethylxanthene; trifluoroacetic acid; potassium hydroxide; sodium t-butanolate;
In
tetrahydrofuran; 1,4-dioxane; 1-methyl-pyrrolidin-2-one; methanol; dichloromethane; N,N-dimethyl-formamide;