1: n-octylmagnesium chloride; N-(1-Phenylethyl)-2-methyleneaziridine With copper(l) iodide in tetrahydrofuran T=-30 - 20°C; Ring cleavage; 24 h; 2: allyl bromide in tetrahydrofuran T=20 - 40°C; Alkylation; 3: With acetic acid in hexane T=20°C; Hydrolysis; Further stages.;

in tetrahydrofuran T=0°C; Inert atmosphere;