Multi-step reaction with 9 steps
1.1: magnesium; iodine / tetrahydrofuran / 2 h / Inert atmosphere
1.2: 2 h / 0 - 20 °C / Inert atmosphere
2.1: hydrogen; 5%-palladium/activated carbon / methanol
3.1: pyridine / chloroform / 2 h / 0 - 20 °C
4.1: L-Selectride / tetrahydrofuran / 3 h / -78 °C / Inert atmosphere
5.1: (1,1'-bis(diphenylphosphino)ferrocene)palladium(II) dichloride; 1,1'-bis-(diphenylphosphino)ferrocene; potassium acetate / 1,4-dioxane; dimethyl sulfoxide / 3 h / 80 °C
6.1: potassium carbonate; tetrakis(triphenylphosphine) palladium(0) / N,N-dimethyl-formamide; ethanol / 2 h / Heating
7.1: potassium hydroxide / methanol; water / 16 h / Reflux
8.1: potassium carbonate / N,N-dimethyl-formamide / 2 h
9.1: methanesulfonyl chloride; triethylamine / chloroform / 2.5 h / 20 °C
9.2: 1 h / 40 °C
With
pyridine; 1,1'-bis-(diphenylphosphino)ferrocene; (1,1'-bis(diphenylphosphino)ferrocene)palladium(II) dichloride; tetrakis(triphenylphosphine) palladium(0); 5%-palladium/activated carbon; hydrogen; iodine; potassium acetate; L-Selectride; potassium carbonate; magnesium; methanesulfonyl chloride; triethylamine; potassium hydroxide;
In
tetrahydrofuran; 1,4-dioxane; methanol; ethanol; chloroform; water; dimethyl sulfoxide; N,N-dimethyl-formamide;
6.1: |Suzuki Coupling;
DOI:10.1248/cpb.c16-00314