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

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

Full Text: HTML

Citation Number: 32

Abstract

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] ...

Related Articles:

Benzimidazolones and indoles as non-thiol farnesyltransferase inhibitors based on tipifarnib scaffold: synthesis and activity

[Li, Qun; Li, Tongmei; Woods, Keith W.; Gu, Wen-Zhen; Cohen, Jerry; Stoll, Vincent S.; Galicia, Tomas; Hutchins, Charles; Frost, David; Rosenberg, Saul H.; Sham, Hing L. Bioorganic and Medicinal Chemistry Letters, 2005 , vol. 15, # 11 p. 2918 - 2922]

A new synthesis of heterocycles via carbonylation of amines with carbon monoxide in the presence of selenium

[Yoshida, Tohru; Kambe, Nobuaki; Ogawa, Akiya; Sonoda, Noboru Phosphorus and Sulfur and the Related Elements, 1988 , vol. 38, p. 137 - 148]

Oxidative cyclization of acyclic ureas with bis (trifluoroacetoxy) iodobenzene to generate N-substituted 2-benzimidazolinones

[Romero, Arthur G.; Darlington, William H.; Jacobsen, E. Jon; Mickelson, John W. Tetrahedron Letters, 1996 , vol. 37, # 14 p. 2361 - 2364]

Synthesis of 2-substituted-benzothiazoles by palladium-catalyzed intramolecular cyclization of o-bromophenylthioureas and o-bromophenylthioamides

[Benedi, Carolina; Bravo, Fernando; Uriz, Pedro; Fernandez, Elena; Claver, Carmen; Castillon, Sergio Tetrahedron Letters, 2003 , vol. 44, # 32 p. 6073 - 6077]

Synthesis of 1??alkyl and 1, 3??dialkyl??2??benzimidazolones from 1??alkenyl??2??benzimidazolones using phase??transfer catalysis technique

[Vernin, Gaston; Domlog, Hicham; Siv, Chan; Metzger, Jaques; El-Shafei, Ahmed Kamal Journal of Heterocyclic Chemistry, 1981 , vol. 18, p. 85 - 89]

More Articles...