Enantioselective Organocatalytic Michael−Wittig−Michael−Michael Reaction: Dichotomous Construction of Pentasubstituted Cyclopentanecarbaldehydes and Pentasubstituted Cyclohexanecarbaldehydes
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https://figshare.com/articles/dataset/Enantioselective_Organocatalytic_Michael_Wittig_Michael_Michael_Reaction_Dichotomous_Construction_of_Pentasubstituted_Cyclopentanecarbaldehydes_and_Pentasubstituted_Cyclohexanecarbaldehydes/2681740
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Michael addition of carbethoxymethylenetriphenylphosphorane (a Wittig reagent) to nitroalkenes, followed by a reaction with ethyl formylformate and cinnamaldehydes, or formaldehyde and cinnamaldehydes, provided the respective pentasubstituted cyclopentanecarbaldehydes bearing a quaternary carbon center and pentasubstituted cyclohexanecarbaldehydes having five contiguous stereocenters with excellent enantioselectivities (up to >99% ee).
创建时间：
2016-02-23
