The simple system of fixing CO2 to synthesize benzimidazolones at atmospheric pressure

Xianting Cao, Haizhen A. Zhong, Pengfei Zhang, Hui Zheng

Research output: Contribution to journalArticlepeer-review

3 Scopus citations


A simple chemical fixation of CO2 at atmospheric pressure to make valuable benzimidazolones derivates via the o-phenylene-diamines carbonylation reaction catalyzed by DBU/S was developed. Different reaction conditions were examined and optimized. A series of benzimidazolones derivatives were synthesized using NMP as solvent at 413K with excellent yields (80–94%). Various substrates were employed and the results suggested the wide application of our method. The quantum mechanics calculations demonstrated that the complexation of DBU with sulfur significantly enhanced the reaction. This protocol rovides a novel approach of fixing CO2 at atmospheric pressure into a series of 2-benzimidazolones derivates.

Original languageEnglish (US)
Pages (from-to)250-255
Number of pages6
JournalJournal of CO2 Utilization
StatePublished - Mar 2018


  • Atmospheric pressure
  • Benzimidazolones
  • Carbon dioxide
  • Chemical fixation
  • Synthesis

ASJC Scopus subject areas

  • Chemical Engineering (miscellaneous)
  • Waste Management and Disposal
  • Process Chemistry and Technology

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