Highly Chemo-, Enantio-, and Regioselective Synthesis of α,α-Disubstituted Furanones by Cu-Catalyzed Conjugate Addition
作者:Kohei Endo、Sayuri Yakeishi、Ryotaro Takayama、Takanori Shibata
DOI:10.1002/chem.201403446
日期:2014.6.17
A highly chemo‐, enantio‐, and regioselective synthesis of furanones bearing an α,α‐disubstituted quaternary stereogenic center is reported. The Cu‐catalyzed enantioselective conjugate addition of organoaluminum reagents to unsaturated ketoesters at room temperature and subsequent lactonization took place. Synthetic transformations of furanones represent facile approaches to various cyclic or acyclic
据报道,带有α,α-二取代的季位立体中心的呋喃酮具有高度的化学,对映和区域选择性合成能力。在室温下,铜催化的有机铝试剂对不饱和酮酯的对映选择性共轭加成反应,随后发生内酯化反应。呋喃酮的合成转化代表了各种容易实现的方法,这些方法可携带带有季位立体中心的各种环状或无环化合物。