1: potassium fluoride / N,N-dimethyl-formamide; water / 0.5 h / 20 °C 2: tetrakis(triphenylphosphine) palladium(0); hydrogenchloride / tetrahydrofuran; water / 26 h / 45 °C / |Inert atmosphere; |Schlenk technique View Scheme

tetrabutyl ammonium fluoride in tetrahydrofuran T=0°C; 0.5 h;

lithium hydroxide hydrate; water in tetrahydrofuran; methanol T=0°C; 0.5 h; Inert atmosphere;