1: 9-Bromophenanthrene With magnesium in tetrahydrofuran T=60°C; 2: 1-bromo-2-chloro-benzene in tetrahydrofuran T=60°C; 2.33333 h; 3: chloro-dicyclohexylphosphine With copper(l) chloride in tetrahydrofuran T=20°C; 48 h; Further stages.;