Synthesis of Chiral <i>N</i>-Heterocyclic Carbene Ligands with Rigid Backbones and Application to the Palladium-Catalyzed Enantioselective Intramolecular α-Arylation of Amides
作者:Lantao Liu、Naoki Ishida、Shinji Ashida、Masahiro Murakami
DOI:10.1021/ol200149s
日期:2011.4.1
Chiral N-heterocyclic carbene (NHC) ligands having a 2,2′-bisquinoline-based C2 symmetric skeleton were developed. The ligands exhibited good enantioselectivity in palladium-catalyzed intramolecular α-arylation of amides to give 3,3-disubsituted oxindoles.
开发了具有2,2'-双喹啉基C 2对称骨架的手性N-杂环卡宾(NHC)配体。配体在钯催化的酰胺内α-芳基化反应中表现出良好的对映选择性,从而得到3,3-二取代的羟吲哚。