triphenylphosphine; [palladium(II)(bis(triphenylphosphanyl))dichloride] in toluene mixt. in toluene stirred at 50°C for 5 h; treated (H2O) at room temp.; extd. (benzene); washed with brine; dried (MgSO4); purified by chromy. on silica gel or by distn. (vac.);

tetrakis(triphenylphosphine) palladium(0); triethylamine in 1,4-dioxane T=80°C; 1 h; Inert atmosphere;

bis-triphenylphosphine-palladium(II) chloride; potassium phenolate; triphenylphosphine in toluene T=70°C; 72 h; Inert atmosphereSealed vessel;

C37H34N2O3S; sodium methylate; copper(l) chloride in tetrahydrofuran T=4°C; 24 h; Inert atmosphereSealed tube; enantioselective reaction;