Synergistic Pd/Cu Catalyzed Allylation of Cyclic Ketimine Esters with Vinylethylene Carbonates: Enantioselective Construction of Trisubstituted Allylic 2H‐Pyrrole Derivatives

Advanced Synthesis and Catalysis(2022)

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Abstract
An asymmetric allylation of cyclic ketimine esters with vinylethylene carbonates was accomplished through a Pd/Cu dual catalysis system under a mild condition, providing a range of trisubstituted allylic 2H‐pyrrole analogues bearing a chiral quaternary stereogenic center in high yields (up to 92% yield) and with excellent regioselectivities and enantioselectivities (up to 96% ee). A gram‐scale operation was also conducted in high efficiency without erosion of enantioselectivity and stereoselectivity.
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Key words
Allylation,α-Quaternary,Pd/Cu Catalyzed,Trisubstituted,Vinylethylene Carbonates
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