1: 3-bromo-benzo[b]-thiophene With n-butyllithium in tetrahydrofuran; hexane T=-60°C; 1 h; Inert atmosphere; 2: tri-isopropoxy-borane in tetrahydrofuran; hexane 1 h; Inert atmosphere;

sodium carbonate; tetrakis(triphenylphosphine) palladium(0) in ethylene glycol dimethyl ether; water T=90°C; Suzuki coupling; 3 h;