First enantioselective synthesis of mikanecic acid via Diels-Alder cycloaddition mediated construction of chiral vinylic quaternary center
摘要:
Chiral mikanecic acid (1) was synthesized in 74% enantiomeric purity (92% ee after crystallization) via asymmetric Diels-Alder reaction of a novel in situ generated chiral 1,3-butadiene-2-carboxylate (A).