1: bis-diphenylphosphine With n-butyllithium in tetrahydrofuran; hexane T=0°C; 0.5 h; 2: dimethylphenysilylepoxyethane in tetrahydrofuran; hexane T=20°C; 3: methyl iodide in tetrahydrofuran; hexane T=0 - 20°C;

different dimethylphenylsilyl- and tert-butyldiphenylsilylepoxides; Product distribution;