1: diphenyl diselenide With ruthenium trichloride; zinc in water; acetonitrile T=80°C; 2: acrolein With air in water; acetonitrile T=80°C; Michael addition; 2.5 h; Further stages.;
(S)-2-[bis-(3,5-bistrifluoromethylphenyl)trimethylsilyloxymethyl]pyrrolidinium perchlorate in water T=4°C; Diels-Alder reaction; 36 h; Inert atmosphere; optical yield given as percent eeenantioselective reaction;
