 
2-Bromo-6-(difluoromethyl)-5-iodo-3-(trifluoromethoxy)pyridine
 
 
3-Bromo-2-methoxy-6-(trifluoromethoxy)pyridine-4-acetonitrile
 
 
2-Bromo-4-(chloromethyl)-6-(trifluoromethoxy)pyridine-3-methanol
 
 
3-Bromo-2-methoxy-4-(trifluoromethoxy)pyridine-6-acetonitrile