tetrakis(triphenylphosphine) palladium(0) in tetrahydrofuran; N,N-dimethyl-formamide T=20 - 100°C; Inert atmosphere;

caesium carbonate; triphenylphosphine; palladium dichloride in tetrahydrofuran; water T=75 - 80°C; 22 h; Inert atmosphere;

1: Methyltriphenylphosphonium bromide With n-butyllithium in tetrahydrofuran; hexane T=-78 - 20°C; 2: 6-(trifluoromethyl)pyridine-3-carboxaldehyde in tetrahydrofuran; hexane T=0 - 60°C;