Heterogeneous Jørgensen–Hayashi catalyst for asymmetric Michael addition of malonates to α,β-enals. Cooperative effect with Ca(OTf)2

Add time:08/25/2019    Source:sciencedirect.com

Heterogeneous chiral Jørgensen–Hayashi catalyst promotes enantioselective Michael addition of malonates at cinnamic aldehydes. In combination with Ca(OTf)2, it provides high yields (up to 78%) and excellent enantiomeric excesses (up to 99%) of the adducts.

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