Chiral Phosphine Lewis Bases Catalyzed Asymmetric aza-Baylis−Hillman Reaction of N-Sulfonated Imines with Activated Olefins

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The absolute configuration of2ewithRconfiguration was determined by X-ray analysis in our previous article, which has been deposited at the Cambridge Crystallographic Data Centre and allocated the deposition numbers CCDC 167239. The absolute configuration of the major enantiomer of2reported in this article was assigned according to the sign of their specific rotations by comparison of the [α]D.

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