1: (-)-(RS,R)-1-chloro-2-phenylethyl p-tolyl sulfoxide With ethyl magnesium chloride in tetrahydrofuran; toluene T=-78°C; 0.8 h; 2: 2,5,5-trimethyl-1,3,2-dioxaborinane in tetrahydrofuran; toluene Heating; 3: With sodium hydroxide; dihydrogen peroxide in various solvents T=0 - 20°C; 3 h;

ruthenium(II)-carbonyl-tris(triphenylphosphine) dihydride in xylene 1 h; Heating;