反应条件
1: potassium carbonate / N,N-dimethyl-formamide / 80 °C 2: sodium hydroxide; water / 20 - 40 °C 3: benzenesulfonyl chloride; triethylamine / toluene; water / 80 °C 4: di-tert-butyl(2′,4′,6′-triisopropylbiphenyl-2-yl)phosphine; bis(dibenzylideneacetone)-palladium(0) / 1,4-dioxane / 24 h / 100 °C / |Inert atmosphere View Scheme