Cu-catalyzed enantioselective synthesis of tertiary benzylic copper complexes and their <i>in situ</i> addition to carbonyl compounds
作者:Fengchang Cheng、Wenxin Lu、Wei Huang、Lu Wen、Mingfeng Li、Fanke Meng
DOI:10.1039/c8sc00827b
日期:——
tertiary benzylic copper complexes from Cu–B(pin) (pin = pinacolato) additions to 1,1-disubstituted alkenes followed by in situ reactions with ketones and carboxylic acid phenol esters to construct multifunctional alkylboron compounds that contain quaternary stereogenic centers is presented. The method is distinguished by the unprecedented reaction mode of tertiary benzylic Cu complexes, allowing reaction
通过 Cu-B(pin)(pin = pinacolato)加成到 1,1-二取代烯烃上,催化化学和对映选择性生成叔苄基铜配合物,然后与酮和羧酸苯酚酯进行原位反应,构建包含以下成分的多功能烷基硼化合物:提出了四级立体中心。该方法的特点是叔苄基铜配合物的前所未有的反应模式,允许与各种羰基亲电子试剂以良好的产率进行反应,并具有高化学选择性、位点选择性、非对映选择性和对映选择性。催化方案是在环境温度下使用易于获得的手性配体和铜盐进行的。多功能烷基硼产品的官能化提供了难以获得的有用的结构单元。