Regioselective Reaction of Ethyl 5-Acetyl-3,4-dihydropyridine-1(2H)-carboxylate with Hydrazines: A Facile Approach to New Pyrazole Derivatives

[摘要]：The reaction of ethyl 5-acetyl-3,4-dihydropyridine-1(2H)-carboxylate with diverse aliphatic as well as aromatic monosubstituted hydrazines resulted in the regioselective formation of N-substituted 3-methylpyrazoles.

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