1: 2-(2-butynyl)malonic acid diethyl ester With sodium hydride in tetrahydrofuran T=20°C; 0.333333 h; 2: 1-vinylcyclopropyl 4-methylbenzenesulfonate With tris(dibenzylideneacetone)dipalladium (0); 1,2-bis-(diphenylphosphino)ethane in tetrahydrofuran T=20°C; 0.166667 h;

1: 2-(2-butynyl)malonic acid diethyl ester With sodium hydride in tetrahydrofuran T=20°C; 0.333333 h; 2: 1-cyclopropyl-1-(p-tolylsulfonyl)ethylene With 1,2-bis-(diphenylphosphino)ethane; tris-(dibenzylideneacetone)dipalladium(0) in tetrahydrofuran T=20°C; 0.166667 h;

1,2-bis-(diphenylphosphino)ethane; bis(dibenzylideneacetone)-palladium(0) Ambient temperature;