Silica‐Supported Silver as a Green and Sustainable Catalyst for the [3+2]‐Cycloaddition Reaction of Azomethine Ylides with 2′‐Hydroxychalcone Derivatives

Abstract A reusable heterogeneous silver nanoparticle catalyst supported on silica was used for the [3+2]‐cycloaddition reaction of azomethine ylides with 2′‐hydroxychalcone derivatives. The green and sustainable catalytic protocol afforded highly functionalized pyrrolidines, indolizidines, and pyrrolizidines in good yields with high regio‐ and diastereoselectivities.