Synthesis and some properties of alkynyl derivatives of 1,3-dialkylperimidones. An example of the 1,2-palladium migration in the Sonogashira reaction
作者:Ekaterina A. Filatova、Anna V. Gulevskaya、Alexander F. Pozharskii、Valery A. Ozeryanskii
DOI:10.1016/j.tet.2016.02.003
日期:2016.3
Pd(II)-X group in the intermediate complex. Several peri-dialkynyl perimidones were tested for thermal or electrophile-initiated cyclizations resulting in the formation of some new polynuclear heterocyclic compounds, mostly derivatives of 3,5-diazadibenzo[cd,k]fluoranthene. The cyclizations have been found to proceed with more difficulty than those of 1,8-bis(phenylethynyl)naphthalene. This fact was ascribed
从相应的溴化物通过以下方法获得了一系列的1,3-二甲基-1,3-二乙基-1 H -perimidine-2(3 H)-one的单,二,三和四炔基衍生物。Sonogashira反应。结果发现,将两个三甲基甲硅烷基乙炔基基团放置在perimidone的6和7位(peri)会形成空间受阻的系统,有时还会伴随着以前未知的Pd(II)-X基团的1,2-迁移。中间复合体。几个围-dialkynyl perimidones被用于产生一些新的多核杂环化合物,大多3,5-二苯并衍生物的形成热或亲电引发的环化反应[测试光盘,ķ]荧蒽。已经发现环化比1,8-双(苯基乙炔基)萘的环化困难得多。这一事实归因于萘部分的较大的面内变形的perimidones的结果在移动围彼此分开-炔基的基团。