1: With sodium hydride; tetrakis(triphenylphosphine) palladium(0) in dichloromethane T=20°C; 2: With Grubb's 2nd generation catalyst in dichloromethane 4 h; Heating; Further stages.;
1: CH(CH2CH=CH2)(CO2Me)2 With sodium hydride in dichloromethane 2: ethylene,methyl acetate With Grubb's 2nd generation catalyst; tetrakis(triphenylphosphine) palladium(0) in dichloromethane 1 h; Heating; Further stages.;