 Kröhnke condensation of enamino nitrile 20 with enone 21 yielded fused pyridine 22.The mechanism of this Kröhnke-type reaction likely proceeds via a vinylogous cyanamide 23 which undergoes elimination of hydrocyanic acid, deprotonation to form enamine 24 and cyclization to form intermediate 25, which is then dehydrated to form the desired pyridine product.A clean one-pot Kröhnke method in aqueous media generates 4’-aryl-2,2’