catalyst: Ni(COD)2-Ph2P(CH2)3PPh2 in toluene alkynylstannane and 1,2-diene (molar ratio 1:3) reacted in toluene in presence of Ni complex (0.05 equiv.) and phosphine (0.05 equiv.) at 30°C for 72 h; detd. by (119)Sn NMR spectra; 4-MeOC6H4C2CH(Bu)C(CH2)SnMe3 and 4-MeOC6H4C2CH2C(SnMe3)CHBu (77:23) obtained, total yield 52percent;