Synthesis of a Novel Tri ‐enaminone as Building Block for Polyaza‐heterocycles

The new tri ‐enaminone, namely, 3,4‐ bis (3‐dimethylamino‐2‐propenoyl)‐1‐[4‐(3‐dimethylamino‐2‐propenoyl)phenyl]‐5‐methyl‐1 H ‐pyrazole was prepared and used as building block for synthesis of novel polyaza‐heterocycles. The latter compounds were obtained via an efficient one‐pot reaction of the tri ‐enaminone with 1,3‐dipoles and various electrophilic and nucleophilic reagents. The structures of the new products were confirmed based on elemental and spectral analyses. Also, alternative synthetic methods were carried out wherever possible as further evidence for some of the newly synthesized products.