One-Pot Quinine-Catalyzed Synthesis of α-Chiral γ-Keto Esters: Enantioenriched Precursors of <i>cis</i>
-α,γ-Substituted-γ-Butyrolactones
作者:Sara Meninno、Chiara Volpe、Alessandra Lattanzi
DOI:10.1002/adsc.201600427
日期:2016.9.1
enantioselective one‐pot synthesis of important building blocks, α‐chiral γ‐keto esters, has been developed by combining a quinine‐catalyzed Michael addition of malononitrile to trans‐enones followed by magnesium monoperoxyphthalate (MMPP) oxidation. These synthons proved to be useful reagents for a simple access to challenging cis‐α,γ‐disubstituted γ‐butyrolactones in good diastereoselectivity and
通过结合奎宁催化的丙二醛向反式烯酮的迈克尔加成反应以及随后的单过氧邻苯二甲酸镁(MMPP)氧化反应,已经开发出了对映体选择性很强的重要组成部分,α-手性γ-酮酯。这些合成子被证明是有用的试剂,用于以良好的非对映选择性和高对映体控制容易地获得具有挑战性的顺式, α,γ-二取代的γ-丁内酯。