Elaboration of Diaryl Ketones into Naphthalenes Fused on Two or Four Sides: A Naphthoannulation Procedure
作者:Patrick M. Donovan、Lawrence T. Scott
DOI:10.1021/ja038254i
日期:2004.3.1
Transition metal-catalyzed double ring closures of 1,1-diaryl-2,2-diethynylethylenes yield polycyclic aromatic hydrocarbons and heterocycles that contain a newly formed naphthalene ring system embedded in a larger polycyclic network. The diynes required for this procedure are readily synthesized from diaryl ketones by the Corey-Fuchs olefination and subsequent Sonogashira coupling with trimethylsilylacetylene
1,1-二芳基-2,2-二乙炔基乙烯的过渡金属催化双环闭合产生多环芳烃和杂环,其中包含嵌入更大多环网络中的新形成的萘环系统。该过程所需的二炔很容易从二芳基酮通过 Corey-Fuchs 烯化和随后的 Sonogashira 与三甲基甲硅烷基乙炔偶联,然后脱甲硅烷基化合成。通过此程序,可以轻松获得新化合物,例如 3,11-二叔丁基 [4] 螺旋烯和 1,8,9- 环萘并噻吨。通过该程序对 9,10-蒽醌进行双环化,在一次操作中闭合四个新的苯环得到晕苯,尽管目前这种情况下的产率很低。