1-Allyl- and 1-(2-Bromopropyl)-2-amino-3-carboxy(carbalkoxy)methylbenzimidazolium Quaternary Salts in the Synthesis of Imidazo[1,2-a]benzimidazole Derivatives
1-Allyl- and 1-(2-Bromopropyl)-2-amino-3-carboxy(carbalkoxy)methylbenzimidazolium Quaternary Salts in the Synthesis of Imidazo[1,2-a]benzimidazole Derivatives