Copper(II)-Catalyzed Exo and Enantioselective Cycloadditions of Azomethine Imines.

[摘要]：A strategy for exo and enantioselective 1,3-dipolar cycloaddn. of azomethine imines to 2-acryloyl-3-pyrazolidinone is described. The corresponding cycloadducts, e.g., I, are isolated with high diastereoselectivities (up to >96:4 exo/endo) and enantioselectivities (up to 98% ee).

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