titanium tetrachloride in dichloromethane T=-78°C; 6 h;

1: (R)-phenylethylene oxide With polymer-supported Co(III)-(R,R)-salen ligand; water T=20°C; 24 h; 2: 2,2-dimethoxy-propane With toluene-4-sulfonic acid Title compound not separated from byproducts;

zirconium tetrachloride in dichloromethane T=25°C; 2 h; Title compound not separated from byproducts.;

toluene-4-sulfonic acid

copper(II) bis(trifluoromethanesulfonate) in dichloromethane T=-80°C; 178 h; Title compound not separated from byproducts;

1: styrene With Pt(dibenzylideneacetone)3; C61H81O4P; 4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl-4',4',5',5'-tetramethyl-1,3,2-dioxaborolane in tetrahydrofuran T=60°C; 3 h; Inert atmosphereSealed tube; 2: With dihydrogen peroxide; sodium hydroxide in tetrahydrofuran T=0 - 20°C; 4 h; Inert atmosphere; 3: 2,2-dimethoxy-propane With toluene-4-sulfonic acid in tetrahydrofuran Inert atmosphere; enantioselective reaction;

toluene-4-sulfonic acid T=22°C; 0.333333 h;