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]quinoliziniumsalts 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