Achieving control over the diastereoselectivity of 1,3-dipolar cycloaddition reactions to obtain maximum number of diastereomers under simple operation is an enduring challenge. In this work, the diastereodivergent 1,3-dipolar cycloaddition of α-fluoro-α,β-unsaturated arylketones and azomethineylides was studied experimentally and theoretically. The reaction produced pyrrolidines (endo- and exo-adducts
Diastereodivergent Synthesis of Chiral 4-Fluoropyrrolidines (<i>exo</i> and <i>exo</i>′) Based on the Cu(II)-Catalyzed Asymmetric 1,3-Dipolar Cycloaddition
1,3-Dipolarcycloaddition of azomethine ylides and electron deficient alkenes is widely studied for rapid installation of pyrrolidine frameworks. Despite significant advances, the major limitations of this process are creating chiral pyrrolidines bearing a quaternary stereogenic center and controlling the diastereoselectivity. Herein, we present an exo-selective asymmetric1,3-dipolar cycloaddition