1: 83 percent / diethyl ether / -78 deg C, 20 min, r.t., 2 h 2: 1) Hg(OAc)2; 2) aq. NaHCO3 / 1) CF3CO2H, r.t., 4 h View Scheme

hydrogen sulfide; mercury(II) diacetate; sodium hydrogencarbonate 1) TFA; Yield given. Multistep reaction;

mercury(II) diacetate 1) TFA; Yield given. Multistep reaction;

acid

triphenylphosphine; zinc in N,N-dimethyl acetamide

1: With [CpRuCl2(PPh3)]; magnesium T=20°C; Kharasch reaction; 15 h; Inert atmosphere; 2: With diisobutylaluminium hydride; lithium chloride in tetrahydrofuran T=0°C; 3: With magnesium in tetrahydrofuran T=0 - 20°C; 1 h; Inert atmosphere; optical yield given as percent dediastereoselective reaction;

in tetrahydrofuran Heating;

in tetrahydrofuran -78 deg C, 20 min, r.t., 2 h; Yield given;