A Copper‐Benzotriazole‐Based Coordination Polymer Catalyzes the Efficient One‐Pot Synthesis of (N′‐Substituted)‐hydrazo‐4‐aryl‐1,4‐dihydropyridines from Azines

摘要: A series of new (N’-substituted)-hydrazo-4-aryl-1,4 dihydropyridines were successfully synthesized via a facile one pot catalytic pathway utilizing azines and propiolate esters as starting materials 1D Cu benzotriazoles based coordination polymer catalyst. In the absence catalyst, corresponding 5-substituted 4,5-dihydro pyrazoles formed in moderate to high yields. Fine-tuning catalysts allowed us gain more insights regarding plausible reaction mechanism.