1: (3R)-hept-1-ene-4,6-diyn-3-ol With copper(l) iodide; tetrabutyl-ammonium chloride; potassium carbonate in N,N-dimethyl-formamide T=20°C; 0.25 h; 2: (Z)-1-chlorodec-2-ene in N,N-dimethyl-formamide T=20°C; 8 h; Further stages.;