Organocatalyzed Michael–Michael Cascade Reaction: Asymmetric Synthesis of Polysubstituted Chromans
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https://figshare.com/articles/dataset/Organocatalyzed_Michael_Michael_Cascade_Reaction_Asymmetric_Synthesis_of_Polysubstituted_Chromans/2398339
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资源简介：
An
enantioselective cascade Michael–Michael reaction between
chalcones enolates and nitromethane catalyzed by a bifunctional thiourea
is developed. This reaction provides a mild but efficient approach
to chiral benzopyrans bearing three consecutive stereocenters in high
yields with excellent stereoselectivities, and the benzopyrans can
be easily transformed to the corresponding tricyclic product.
创建时间：
2016-02-19
