1: triphenylbenzyl-phosphonium bromide in tetrahydrofuran; hexane T=-78°C; 1 h; Inert atmosphere; 2: N-2,4,6-trimethylphenylsulfonylbenzaldimine in tetrahydrofuran; hexane T=-78 - 20°C; 12 h; Inert atmosphere; optical yield given as percent destereoselective reaction;

in toluene T=120°C; 12 h; Inert atmosphere; optical yield given as percent de;