Cu-Catalyzed Asymmetric 1,3-Dipolar Cycloaddition of Azomethine Ylides with β-Phenylsulfonyl Enones. Ligand Controlled Diastereoselectivity Reversal
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https://figshare.com/articles/dataset/Cu_Catalyzed_Asymmetric_1_3_Dipolar_Cycloaddition_of_Azomethine_Ylides_with_Phenylsulfonyl_Enones_Ligand_Controlled_Diastereoselectivity_Reversal/2802991
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资源简介：
A catalytic asymmetric procedure for the 1,3-dipolar cycloaddition of (Ε)-β-phenylsulfonyl enones with azomethine ylides to provide highly functionalized pyrrolidine derivatives is described. In the presence of chiral CuI-Segphos catalysts the aducts were obtained with high regio-, diastereo-, and enantioselectivity. Interestingly, a switch from endo to exo selectivity was observed when Segphos or DTBM-Segphos ligand was used.
创建时间：
2010-01-01
