Abstract
AbstractCascade Michael addition—hemiacetalization reaction of β‐nitroethanols and α,β‐unsaturated aldehydes is smoothly catalyzed by a prolinol‐derived organocatalyst to give cis‐substituted tetrahydropyranols (III), (V) and (IX) in excellent enantioselectivity, although diastereoselectivity is only moderate.
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