Organocatalytic Asymmetric Intramolecular Allylic Substitutions of Morita-Baylis-Hillman Acetates: Synthesis of Chiral 2-(α-Methylene)-Pyrrolidines

However, to the best of our knowledge, there is no report on the intramolecular version of the organocatalytic allylic substitutions of MBH acetates, altho-ugh these reactions afford versatile heterocyclic intermediates for pharmaceutical and natural product synthesis. In this paper, we report the first example of the intramolecular organocatalytic asymmetric allylic substitutions of MBH acetates containing a protected amine moiety (nucleophile) to obtain various chiral 2-(α-methylene)-pyrrolidine derivatives,