Regioselective Copper-Mediated Synthesis of Thieno[2,3-<i>c</i>]pyrane-7-one, Indolo[2,3-<i>c</i>]pyrane-1-one, and Indolo[3,2-<i>c</i>]pyrane-1-one
作者:Samuel Inack Ngi、Vincent Guilloteau、Mohamed Abarbri、Jérôme Thibonnet
DOI:10.1021/jo201528u
日期:2011.10.21
In the presence of copper(I) iodide, heteroaromatic β-iodo-α,β-unsaturated carboxylic acid systems opposed to terminal alkyne afford selectively 6-endo-dig cyclization products via a tandem coupling oxacyclization reaction.
在存在碘化铜(I)的情况下,与末端炔烃相对的杂芳族β-碘-α,β-不饱和羧酸体系通过串联偶联的羰基环化反应选择性地提供6-内-挖环化产物。