Return to Article Details HETEROCYCLES WITH A BRIDGING NITROGEN ATOM. 15. THE NOVEL RECYCLIZATION OF DIPYRIDO[1,2-<i>a</i>:1',2'-<i>c</i>]IMIDAZOLIUM SALTS TO PYRIDO[1,2-<i>a</i>]BENZIMIDAZOLE-8-CARBOXALDEHYDES Download Download PDF