Ethyl 4-(bromomethyl)-2-cyano-5-(trifluoromethoxy)pyridine-3-acetate
Ethyl 4-chloro-2-methyl-5-(trifluoromethoxy)pyridine-3-carboxylate
Ethyl 5-(bromomethyl)-3-cyano-2-(trifluoromethoxy)pyridine-4-acetate
Ethyl 5-chloro-3-methyl-2-(trifluoromethoxy)pyridine-4-carboxylate