potassium carbonate; tetrabutyl-ammonium chloride in N,N-dimethyl-formamide T=60°C; 2 h;

1: α-bromoacrylate d'ethyle With naphthalene; N(Et)4ClO4; zinc in N,N-dimethyl-formamide T=-20°C; 1 h; 2: 4-bromo-1-iodobenzene With bis (triortho-tolylphosphine)palladium(II) chloride in N,N-dimethyl-formamide T=70°C; 3 h;

bis (triortho-tolylphosphine)palladium(II) chloride; zinc in tetrahydrofuran; N,N-dimethyl-formamide 3 h; Heating;