Ethyl 2-(chloromethyl)-6-cyano-5-(difluoromethyl)pyridine-3-acetate
4-(Bromomethyl)-5-cyano-3-(difluoromethyl)-2-(trifluoromethyl)pyridine
2-(Chloromethyl)-5-(difluoromethyl)-4-fluoro-3-hydroxypyridine
5-(Bromomethyl)-2-cyano-3-(difluoromethyl)pyridine-4-methanol