Recent Developments in Catalytic Asymmetric Aziridination.

Aziridines, structurally related to epoxides, are among the most challenging and fascinating heterocycles in organic chemistry due to their increasing applications in asymmetric synthesis, medicinal chemistry, and materials science. These three-membered nitrogen-containing rings serve as key intermediates in the synthesis of chiral amines, complex molecules, and pharmaceutically relevant compounds. This review provides an overview of recent progress in catalytic asymmetric aziridination, focusing on novel methodologies, an analysis of the scope and limitations of each approach, and mechanistic insights.