Enantioselective Synthesis of α‑Heteroarylpyrrolidines by Copper-Catalyzed 1,3-Dipolar Cycloaddition of α‑Silylimines Ana Pascual-Escudero María González-Esguevillas Silvia Padilla Javier Adrio Juan C. Carretero 10.1021/ol5007373.s001 https://acs.figshare.com/articles/dataset/Enantioselective_Synthesis_of_Heteroarylpyrrolidines_by_Copper_Catalyzed_1_3_Dipolar_Cycloaddition_of_Silylimines/2304967 α-Heteroarylpyrrolidines have been efficiently prepared via 1,3-dipolar cycloaddition between silylimines and activated olefins. In the presence of Cu­(CH<sub>3</sub>CN)<sub>4</sub>PF<sub>6</sub>/Walphos as catalytic system, high levels of enantioselectivity (up to ≥99% ee) and diastereoselectivity were achieved (major formation of C-2/C-4 <i>trans</i>-substituted pyrrolidines). The reaction is compatible with a broad variety of dipolarophiles including maleimides, maleates, fumarates, nitroalkenes, and vinylsulfones. The resulting cycloadducts can be transformed into bioactive pyrrolidine derivatives. 2014-04-18 00:00:00 enantioselectivity presence ee silylimine nitroalkene maleimide fumarate variety Dipolar maleate cycloaddition olefins dipolar dipolarophile diastereoselectivity formation cycloadduct Enantioselective Synthesis vinylsulfone Silylimine Heteroarylpyrrolidine bioactive pyrrolidine derivatives Cycloaddition Cu