Silver-Catalyzed Regio- and Stereoselective Addition of Carboxylic Acids to Ynol Ethers
作者:Jing Yin、Yihui Bai、Mengyi Mao、Gangguo Zhu
DOI:10.1021/jo501615a
日期:2014.10.3
enol esters in good yields with excellent regio- and stereoselectivity. Meaningfully, the Ni-catalyzed selective coupling of alkenyl C–OPiv bonds of (Z)-α-alkoxy enol esters with boronic acids enables a convenient route to the access of (E)-enol ethers. As such, the two-step procedure, consisted of a hydrocarboxylation and a subsequent Suzuki–Miyaura coupling, offers a formal trans hydroarylation of
描述了银催化的羧酸向炔醇醚的反式加成。该反应在羧酸和炔醇醚方面具有广泛的范围,以良好的产率和优异的区域选择性和立体选择性递送(Z)-α-烷氧基烯醇酯。有意义的是,Ni催化(Z)-α-烷氧基烯醇酯的烯基C-OPiv键与硼酸的选择性偶联,为获得(E)-烯醇醚的便捷途径提供了便利。因此,由加氢羧基化和随后的Suzuki-Miyaura偶联组成的两步过程提供了炔醇醚的正式反式氢芳基化作用,从而为我们先前的报告提供了很好的补充方法。