tetrakis(triphenylphosphine) palladium(0) in tetrahydrofuran T=60°C; 18 h;

tetrakis(triphenylphosphine) palladium(0) in tetrahydrofuran Sn compd. (1.1 equiv.) was added to soln. of ether in THF in presence ofPd catalyst; heated at 60°C for 18 h;