1: dimethylsulfone With isopropylmagnesium chloride in tetrahydrofuran T=20°C; 1 h; 2: cyclododecanone (2,4,6-triisopropylbenzenesulfonyl)hydrazone in tetrahydrofuran T=20°C; 16 h; Further stages.;

1: (phenylsulfonyl)methane With isopropylmagnesium chloride in tetrahydrofuran T=20°C; 1 h; 2: cyclododecanone (2,4,6-triisopropylbenzenesulfonyl)hydrazone in tetrahydrofuran T=20°C; 16 h; Further stages.;