1: (S)-2-(2-phenylbut-2-yl)-4,4,5,5-tetramethyl-1,3,2-dioxaborolane With KHF2 in methanol Inert atmosphere; 2: 4-chlorobenzaldehyde With [RhCl(η2:η2-cycloocta-1,5-diene)]2; water in 1,4-dioxane T=60°C; 15 h; Inert atmosphere; enantioselective reaction;

1: (S)-2-(2-phenylbut-2-yl)-4,4,5,5-tetramethyl-1,3,2-dioxaborolane With KHF2 in methanol Inert atmosphere; 2: benzaldehyde With [RhCl(η2:η2-cycloocta-1,5-diene)]2; water in 1,4-dioxane T=60°C; 15 h; Inert atmosphere; enantioselective reaction;