1: 3-bromo-pyridine With isopropylmagnesium chloride in tetrahydrofuran T=20°C; 1 h; 2: vinylboronic acid dibutyl ester in tetrahydrofuran T=20°C; 18 h; 3: With hydrogenchloride in tetrahydrofuran; water pH=7;

1: 3-Methylpyridine With isopropylmagnesium chloride in tetrahydrofuran T=20°C; 1 h; 2: vinylboronic acid dibutyl ester in tetrahydrofuran T=20°C; 18 h;

1: in tetrahydrofuran T=0 - 20°C; 16 h; 2: With hydrogenchloride; water in tetrahydrofuran T=20°C; pH=9 - 10;