1: With titanium tetra-n-butoxide in tetrahydrofuran T=20°C; 54 h; Inert atmosphere; 2: With water in tetrahydrofuran 1 h; Inert atmosphere;

in benzene 2 h; Heating;

hydrogen in toluene T=100°C; P=760.051 Torr; 0.5 h;

1: With titanium(IV) isopropylate in tetrahydrofuran T=0°C; 0.5 h; Inert atmosphere; 2: With phenyl silane in tetrahydrofuran T=20°C; 24 h; Inert atmosphere; diastereoselective reaction;