Multi-step reaction with 9 steps
1.1: sulfuric acid / 0 °C / Reflux
2.1: potassium carbonate; tetra-(n-butyl)ammonium iodide / N,N-dimethyl-formamide / 3 h / 20 °C / Inert atmosphere
3.1: lithium aluminium tetrahydride / tetrahydrofuran / 3 h / 0 - 20 °C / Inert atmosphere
4.1: triphenylphosphine; tetrachloromethane / tetrahydrofuran / 2 h / Reflux; Inert atmosphere
5.1: potassium carbonate; bis-triphenylphosphine-palladium(II) chloride / tetrahydrofuran / 20 °C / Inert atmosphere
6.1: palladium 10% on activated carbon; hydrogen / methanol
7.1: pyridine / dichloromethane / 3.17 h / 0 - 20 °C
8.1: palladium diacetate; sodium carbonate; triphenylphosphine / water; 1,2-dimethoxyethane / 2 h / Inert atmosphere; Reflux
9.1: lithium hydroxide monohydrate / water; tetrahydrofuran / 16 h / 20 °C
9.2: pH Ca. 2
With
pyridine; tetrachloromethane; bis-triphenylphosphine-palladium(II) chloride; lithium aluminium tetrahydride; lithium hydroxide monohydrate; sulfuric acid; palladium 10% on activated carbon; hydrogen; palladium diacetate; tetra-(n-butyl)ammonium iodide; sodium carbonate; potassium carbonate; triphenylphosphine;
In
tetrahydrofuran; methanol; 1,2-dimethoxyethane; dichloromethane; water; N,N-dimethyl-formamide;