 
Ethyl 4-(bromomethyl)-2-chloro-3-(trifluoromethoxy)pyridine-6-carboxylate
 
 
Ethyl 3-(bromomethyl)-2-chloro-4-(trifluoromethoxy)pyridine-6-carboxylate
 
 
Methyl 4-(bromomethyl)-3-chloro-5-(trifluoromethoxy)pyridine-2-carboxylate
 
 
Methyl 4-(bromomethyl)-6-chloro-2-(trifluoromethoxy)pyridine-3-carboxylate