Abstract

Copper-catalyzed cycloaddition/coupling cascades utilizing azomethine imines and alkynes have been developed for the divergent synthesis of (Z)-alkenyl and alkynyl N,N'-bicyclic pyrazolidinones by varying the reaction conditions. The choice of inert or oxidative atmosphere plays a crucial role in determining the transformation pathways. These reactions have broad substrate scopes and mild conditions, making them potentially useful.

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