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The rational design and implementation of enantiodivergent enamine catalysis is reported. A simple secondary amine catalyst, 2‐methyl‐l‐proline, and its tetrabutylammonium salt function as an enantiodivergent catalyst pair delivering the enantiomers of α‐functionalized aldehyde products in excellent enantioselectivities. This novel concept of designed enantiodivergence is applied to the enantioselective...
The first regio‐, diastereo‐, and enantioselective direct Michael reaction of β,γ‐unsaturated ketones with nitroolefins is enabled by Brønsted base/hydrogen‐bonding bifunctional catalysis. A squaramide‐substituted tertiary amine catalyzes the reaction of a broad range of β,γ‐unsaturated ketones to proceed at the α‐site exclusively, giving rise to adducts with two consecutive tertiary carbon stereocenters...
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