ACS Catalysis

DBU-Based Ionic-Liquid-Catalyzed Carbonylation of o-Phenylenediamines with CO2 to 2-Benzimidazolones under Solvent-Free Conditions

…, H Zhang, Y Zhao, S Chen, J Xu, L Hao, Z Liu

文献索引：Yu, Bo; Zhang, Hongye; Zhao, Yanfei; Chen, Sha; Xu, Jilei; Hao, Leiduan; Liu, Zhimin ACS Catalysis, 2013 , vol. 3, # 9 p. 2076 - 2082

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被引用次数: 32

摘要

Herein, a new route was presented to synthesize 2-benzimidazolones via the carbonylation of o-phenylenediamines with CO2 catalyzed by 1, 8-diazabicyclo [5.4. 0] undec-7-ene (DBU)- based ionic liquids under solvent-free conditions. DBU acetate ([DBUH][OAc]) displayed high efficiency for catalyzing the reactions of CO2 with o-phenylenediamines, and a series of benzimidazolones were obtained in high yields. It was demonstrated that [DBUH][OAc] ...