Stereoselective Cascade Reactions of Donor-Acceptor Cyclopropanes with<i>m-N,N</i>-Dialkylaminophenyl α,β-Unsaturated Carbonyls: Diastereoselective Synthesis of<i>cis</i>- and<i>trans</i>-Tetralins
作者:Seunghui Sin、Sung-Gon Kim
DOI:10.1002/adsc.201600416
日期:2016.8.18
[Yb(OTf)3]‐catalyzed diastereoselective cascade reaction of m‐N,N‐dimethylaminophenyl α,β‐unsaturated carbonyls with cyclopropane 1,1‐diesters under mild reaction conditions afforded highly substituted cis‐ and trans‐tetralins. The reaction of m‐N,N‐dimethylaminophenyl α,β‐unsaturated ketones with cyclopropane 1,1‐diesters provided tetralins with a trans orientation of the 1,4‐substitutents on the cyclohexyl ring;
三氟f(III)[Yb(OTf)3 ]-催化的m-N,N-二甲基氨基苯基α,β-不饱和羰基化合物与环丙烷1,1-二酯的非对映选择性级联反应在温和的反应条件下提供了高度取代的顺式和反式-四氢化萘。m-N,N-二甲基氨基苯基α,β-不饱和酮与环丙烷1,1-二酯的反应提供了环己基环上1,4-取代基的反式四氢萘; 顺式四氢化萘可从具有高非对映选择性的m-N,N-二甲基氨基苯基取代的亚甲基丙二酸酯获得。