Stereochemical Diversity in Pyrrolidine Synthesis by Catalytic Asymmetric 1,3-Dipolar Cycloaddition of Azomethine Ylides

The pyrrolidine ring is a privilege structural motif in synthetic and medicinal chemisty. This review aims to highlight the efficiency and high versatility of the catalytic asymmetric 1,3-dipolar cycloaddition of azomethine ylides for the preparation of stereochemically varied enantioenriched pyrrolidines. Special emphasis will be paid to stereodivergent procedures giving rise to different stereoisomers from the same starting materials.