Fe(OTf)3-catalyzed annulation of α,β-unsaturated ketoxime acetates with enaminones for the synthesis of functionalized 2,4-diarylpyridines

This method involves a cascade reaction utilizing 1 and enamines 2 as substrates, which occurred by refluxing a mixture of the starting materials in toluene with the catalyst Fe(OTf) 3 .