1: cyclohexanone With lithium diisopropyl amide in tetrahydrofuran; hexane T=-78°C; 1 h; Inert atmosphere; 2: 2,2'-dicyanato-1,1'-binaphthyl in tetrahydrofuran; hexane T=-78°C; 8 h; Inert atmosphere;

sodium azide in water; acetone 7 h;