Azonia Aromatic Cations by Ring-Closing Metathesis: Synthesis of Azaquinolizinium Cations

作者:Abengozar Alberto; Abarca Beatriz; Cuadro Ana M*; Sucunza David; Alvarez Builla Julio; Vaquero Juan J
来源:European Journal of Organic Chemistry, 2015, 2015(19): 4214-4223.
DOI:10.1002/ejoc.201500404

摘要

A strategy based on a ring-closing metathesis (RCM) reaction of pyridinium azadienes in the presence of the second generation Grubbs catalyst was employed as a new approach to synthesize the 1-azaquinolizinium (pyrido[1,2-a]pyrimidin-5-ium) heterocycle and some simple derivatives. This method was also successfully applied to the first reported synthesis of the benzo-1-azaquinolizinium (pyrimido[2,1-a]isoquinolinium) cation by using the Hoveyda-Grubbs catalyst in Cl2CHCHCl2 at 130 degrees C.

  • 出版日期2015-7