Pyridine series

ethyl 5-nitro-2-(trifluorometh

ethyl 5-fluoro-3-methoxy-2-nit

ethyl 5-fluoro-2-methylbenzoat

ethyl 5-chloro-2-fluoro-4-meth

ethyl 5-chloro-2-fluoro-4-hydr

ethyl 4-bromo-2-hydroxybenzoat

ethyl 3-fluoro-5-(trifluoromet

ethyl 3-bromo-4-hydroxybenzoat

ethyl 2-chloro-6-hydroxybenzoa

ethyl 2-chloro-5-formyl-6-fluo

ethyl 2-amino-5-fluoro-3-metho

ethyl 2-amino-5-cyano-6-fluoro