Enantioselective Synthesis of Highly Substituted Furans by a Copper(II)-Catalyzed Cycloisomerization–Indole Addition Reaction
作者:Vivek Rauniyar、Z. Jane Wang、Heather E. Burks、F. Dean Toste
DOI:10.1021/ja202959n
日期:2011.6.8
A catalytic enantioselective reaction based on a copper(II) catalyst strictly containing chiral anionic ligands is described. In the present work, copper(II)-phosphate catalyst promotes the intramolecular heterocyclization of 2-(1-alkynyl)-2-alkene-1-ones and facilitates high levels of enantioselectivity in the subsequent nucleophile attack. Mechanistic studies suggest that formation of a copper(II)-indole
描述了基于严格包含手性阴离子配体的铜 (II) 催化剂的催化对映选择性反应。在目前的工作中,磷酸铜 (II) 催化剂促进了 2-(1-炔基)-2-alkene-1-ones 的分子内杂环化,并在随后的亲核试剂攻击中促进了高水平的对映选择性。机理研究表明铜(II)-吲哚物种的形成对于催化很重要。