1: allyl p-toluenesulphonate With triphenyl phosphite; tris-(dibenzylideneacetone)dipalladium(0) in 1,2-dichloro-ethane T=20°C; 0.5 h; 2: nona-2,7-diyne in 1,2-dichloro-ethane T=80°C; 12 h;

lithium aluminium tetrahydride in tetrahydrofuran Heating;