Multi-step reaction with 7 steps
1.1: bromine; sodium hydrogencarbonate / methanol / 3 h / 0 - 20 °C / Inert atmosphere
2.1: sodium hydroxide; tetra(n-butyl)ammonium hydrogensulfate / dichloromethane; water / 1 h / 0 °C / Inert atmosphere
3.1: (1,1'-bis(diphenylphosphino)ferrocene)palladium(II) dichloride; potassium acetate / 1,2-dimethoxyethane / 18 h / 80 °C / Inert atmosphere
4.1: tetrakis(triphenylphosphine) palladium(0); sodium carbonate / water; 1,4-dioxane / 1 h / 80 °C / Inert atmosphere
5.1: sodium carbonate / water; 1,4-dioxane / 0.5 h / 120 °C / Microwave irradiation; Inert atmosphere
6.1: sodium hydride / N,N-dimethyl-formamide / 0.5 h / 0 °C / Inert atmosphere
6.2: 20 h / 20 °C / Inert atmosphere
7.1: toluene-4-sulfonic acid / 1-methyl-pyrrolidin-2-one / 2 h / 200 °C / Microwave irradiation; Inert atmosphere
With
(1,1'-bis(diphenylphosphino)ferrocene)palladium(II) dichloride; tetrakis(triphenylphosphine) palladium(0); bromine; potassium acetate; tetra(n-butyl)ammonium hydrogensulfate; sodium hydride; sodium hydrogencarbonate; sodium carbonate; toluene-4-sulfonic acid; sodium hydroxide;
In
1,4-dioxane; 1-methyl-pyrrolidin-2-one; methanol; 1,2-dimethoxyethane; dichloromethane; water; N,N-dimethyl-formamide;
DOI:10.1021/acs.jmedchem.5b00098