In Figure , we combined the ring-opening, halogenation, ring-closing reactions into a one-pot process. For pyridines without 3-substituents, such as 2-phenylpyridine, ring-opening using conditions A, and halogenation with conditions B-I and B-Br (Figure ) are appropriate. Adding NH4OAc and EtOH to the reaction mixture and heating to 60 ºC forms pyridines 7 & 8. When 3-substituents are present, such as in 3-phenylpyridine, the acid-mediated halogenation, ring-closing protocols function well in the one-pot process (conditions C, 9-11). These processes do not require intermediate work-up or purification steps and involve adding reagents sequentially to the same reaction vessel. Adding an equivalent of trimethoxybenzene after the halogenation step in conditions B-I and B-Br is advisable to quench any remaining N-halosuccinimide before cyclization.