Asymmetric Baylis–Hillman reactions: catalysis using a chiral pyrrolizidine base

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Anthony G. M. Barrett, Andrew S. Cook and Akio Kamimura


Abstract

A novel chiral pyrrolizidine base 5 derived from L-proline promotes the Baylis–Hillman reaction of ethyl and methyl vinyl ketones with electron deficient aromatic aldehydes with moderate levels of enantiomeric excess.


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