tris(dibenzylideneacetone)dipalladium(0) chloroform complex; 1,2-bis-(diphenylphosphino)ethane in tetrahydrofuran T=50°C; 3 h; Yield given. Yields of byproduct given. Title compound not separated from byproducts;

tris(dibenzylideneacetone)dipalladium(0) chloroform complex; 1,2-bis-(diphenylphosphino)ethane in tetrahydrofuran T=50°C; 3 h; Yield given. Yields of byproduct given. Title compound not separated from byproducts;

tetrakis(triphenylphosphine) palladium(0) in tetrahydrofuran 16 h; Heating; Yield given. Yields of byproduct given. Title compound not separated from byproducts;

tris-(dibenzylideneacetone)dipalladium(0); triphenylphosphine in tetrahydrofuran T=50°C; 2 h; Yield given. Yields of byproduct given. Title compound not separated from byproducts;

CuCl - N-heterocyclic carbene in diethyl ether T=0°C;