b-Bu4NF in tetrahydrofuran T=-78°C; 2 h;

1: anhydrous 1-octyne With iso-propylmagnesium bromide in tetrahydrofuran T=20°C; 2 h; 2: (1Z,3Z)-1,4-diiodo-2-hexyl-1,3-decadiene With tetrakis(triphenylphosphine) palladium(0) in tetrahydrofuran T=20°C; 12 h;