Ring-Closing Metathesis Approach to Heteroaromatic Cations: Synthesis of Benzo[a]quinolizinium Salts
作者:Ana Nuñez、Beatriz Abarca、Ana M. Cuadro、Julio Alvarez-Builla、Juan J. Vaquero
DOI:10.1002/ejoc.201001373
日期:2011.3
Benzo[α]quinolizinium salts have been synthesized through ring-closing metathesis reactions of 1-butenyl-2-vinylisoquinolinium, 2-butenyl-1-vinylisoquinolinium and 2-styryl-1-vinylpyridinium salts in the presence of Grubbs and Hoveyda-Grubbs catalysts. The results show that the last approach is the most efficient for the preparation of this heteroaromatic tricyclic system and several previously unknown
在 Grubbs 和 Hoveyda-Grubbs 催化剂存在下,通过 1-丁烯基-2-乙烯基异喹啉鎓、2-丁烯基-1-乙烯基异喹啉鎓和 2-苯乙烯基-1-乙烯基吡啶鎓盐的闭环复分解反应合成了苯并[α]喹啉鎓盐. 结果表明,最后一种方法对于制备这种杂芳族三环系统是最有效的,并且已经制备了几种以前未知的衍生物。