water; 2,3-dicyano-5,6-dichloro-p-benzoquinone; palladium dichloride in 1,2-dichloro-ethane T=50°C; 2 h; Mechanism; stereoselective reaction;

water; 2,3-dicyano-5,6-dichloro-p-benzoquinone; palladium dichloride in 1,2-dichloro-ethane T=50°C; 2 h; Mechanism; stereoselective reaction;