Synthesis of Benzimidazoles Condensed with, or Linked to, Nitroxides or Heterocyclic N-Oxides
作者:Kálmán Hideg、Balázs Bognár、Tamás Kálai
DOI:10.1055/s-2008-1067158
日期:2008.8
Pyrazino[1,2-a]benzimidazoles were synthesized starting from 2-acetyl-1H-benzimidazole. Benzimidazoles were linked to nitroxides by lithiation and ring-closure and cross-coupling reactions leading to pH-sensitive EPR probes and a paramagnetic analogue of antiviral agent HBB.