Pd-Catalyzed Alkene Difunctionalization Reactions of Enolates for the Synthesis of Substituted Bicyclic Cyclopentanes
作者:Evan C. Bornowski、Elsa M. Hinds、Derick R. White、Yusuke Nakamura、John P. Wolfe
DOI:10.1021/acs.oprd.9b00248
日期:2019.8.16
Palladium-catalyzed alkene difunctionalization reactions between alkenes bearing tethered aryl or alkenyl triflates and enolate nucleophiles are described. The transformations form two C–C bonds, a ring, and up to two stereocenters while producing substituted cyclopentane derivatives that contain appended carbonyl functionality. Products are formed with up to >20:1 diastereoselectivity, and the formation
描述了带有链式芳基或链烯基三氟甲磺酸酯的烯与烯醇式亲核试剂之间的钯催化的烯烃双官能化反应。转换形成两个C–C键,一个环和至多两个立体中心,同时生成含有附加羰基官能团的取代的环戊烷衍生物。形成的产物具有高达> 20:1的非对映选择性,并且在季碳原子之间形成空间拥挤的键是可行的。