Diastereo- and Enantioselective Organocatalytic Direct Conjugate Addition of γ-Butenolide to Chalcones
作者:Yinan Zhang、Chenguang Yu、Yafei Ji、Wei Wang
DOI:10.1002/asia.201000014
日期:——
A diastereo‐ and enantioselective conjugate addition reaction of γ‐butenolide with chalcones has been developed. Notably, unmodified γ‐butenolide was directly employed as a nucleophile in the Michael addition reactions. This process was catalyzed by a previously reported cyclohexane diamine thiourea under mild reaction conditions to afford enantioenriched synthetically and biologically important substituted
已经开发了γ-丁烯内酯与查耳酮的非对映和对映选择性共轭加成反应。值得注意的是,未修饰的γ-丁烯内酯直接用作Michael加成反应中的亲核试剂。该过程由先前报道的环己烷二胺硫脲在温和的反应条件下催化,得到对映体富集的合成和生物学上重要的取代呋喃酮。