Nirav M. Shah, Hitendra S. Joshi, Synthesis and Antimicrobial Screening of some New Pyrimido[1,2-a]Benzimidazole Derivatives, ILCPA Volume 25, International Letters of Chemistry, Physics and Astronomy (Volume 25)
    Some new pyrimido[1,2-a]benzimidazole derivatives were synthesized by reacting 2-amino benzimidazole and chalcones in n-butanol at reflux temperature. In our present study we have used various heterocyclic chalcones derived from furfural and substituted acetophenones. All synthesized compounds were characterized by IR, <sup>1</sup>H NMR and Mass spectroscopy. All synthesized compounds were screened for their antimicrobial activity against gram positive and gram negative bacteria which showed moderate to good activity.
    2-Amino Benzimidazole, Antimicrobial Activity Azoloazine, Chalcone, Pyrimido[1,2-a]Benzimidazole