pyridine T=0 - 20°C;

1: methylmagnesium bromide With ZnCl2*TMEDA in tetrahydrofuran T=0°C; Inert atmosphere; 2: 4-(1-(4-methoxyphenylimino)ethyl)phenyl trifluoromethanesulfonate With iron (III) acetylacetonate; 1,2-dichloro-2-methylpropane; 4,4'-di-tert-butyl-2,2'-dipyridyl in tetrahydrofuran T=0°C; 72 h; Inert atmosphere; 3: With hydrogenchloride; water in tetrahydrofuran T=20°C; 3 h; chemoselective reaction;