BINAP-AgSbF6 vs. BINAP-AgClO4 Complexes as Catalysts for the Enantioselective 1,3-Dipolar Cycloaddition of Azomethine Ylides and Alkenes

[摘要]：The employment of AgSbF6 and BINAP ligands has been evaluated in the catalyzed enantioselective 1,3-dipolar cycloadditions between azomethine ylides and electrophilic alkenes. The results are compared with the analogous ones obtained when using AgClO4. The cycloaddition with maleimides and trans-1,2bis(phenylsulfonyl) ethylene are clearly improved by the AgSbF6-derived catalyst, and its efficiency is crucial for ensure good yields and excellent ee in the three-component reaction.

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