1: 1-methyl-1H-imidazole With n-butyllithium; N,N,N',N,-tetramethylethylenediamine in tetrahydrofuran T=-20 - 20°C; 1.5 h; 2: tributyltin chloride in tetrahydrofuran T=-20 - 20°C; 17 h;

1: 1-methyl-1H-imidazole With n-butyllithium; N,N,N',N,-tetramethylethylenediamine in hexanes T=-20°C; 0.5 h; 2: tributyltin chloride in hexanes T=-20 - 20°C;

tetrakis(triphenylphosphine) palladium(0) in N,N-dimethyl-formamide T=95°C; Stille Cross Coupling; 40 h; Inert atmosphereLarge scale;