1: 5-hexenyl bromide With magnesium in tetrahydrofuran Grignard reaction; 2: methyloxirane in tetrahydrofuran T=-78°C; Grignard reaction; 0.5 h; Further stages.;

samarium diiodide; tert-butyl alcohol in tetrahydrofuran 48 h;

N,N,N',N',N'',N''-hexamethylphosphoric triamide; samarium diiodide; tert-butyl alcohol in tetrahydrofuran