1: tert-butyl β-(tributylstannyl)ethyl ketone With lithium diisopropyl amide in tetrahydrofuran; hexane T=-78°C; 2 h; 2: With n-butyllithium in tetrahydrofuran; hexane T=-78 - 0°C; 0.5 h; 3: allyl bromide in tetrahydrofuran; hexane T=-78°C; 0.25 h;

1: tert-butyl β-(tributylstannyl)ethyl ketone With lithium diisopropyl amide in tetrahydrofuran; hexane T=-78°C; 2 h; 2: With n-butyllithium in tetrahydrofuran; hexane T=-78 - 0°C; 0.5 h; 3: n-bromopentane in tetrahydrofuran; hexane T=-78 - -20°C; 1 h;