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E. Hasegawa, A. Yoneoka, K. Suzuki, T. Kato, T. Kitazume and K. Yanagi, “Reductive Transformation of α,β-Epoxy Ketones and Other Compounds Promoted through Photoinduced Electron Transfer Processes with 1,3-Dimethyl-2-phenylbenzimidazoline (DMPBI),” Tetrahedron, Vol. 55, 1999, pp. 12957-12968.
http://dx.doi.org/10.1016/S0040-4020(99)00804-2

has been cited by the following article:

• TITLE: Synthesis of Multifunctionalised 2-Substituted Benzimidazoles Using Copper (II) Hydroxide as Efficient Solid Catalyst

  AUTHORS: Murugulla Adharvana Chari, Zaied-A-Mosaa, Donthabakthuni Shobha, Sridhar Malayalama

  KEYWORDS: o-Phenylenediamine; Aldehydes; Copper (II) Hydroxide; Solid Catalyst; Multifunctionalised Benzimidazoles

  JOURNAL NAME: International Journal of Organic Chemistry, Vol.3 No.4, December 27, 2013

  ABSTRACT: Here we demonstrate the synthesis of multifunctionalised benzimidazoles through the coupling of o-phenylenediamine with aldehydes by using Copper (II) hydroxide as an efficient solid catalyst in methanol at room temperature. The Copper (II) hydroxide solid catalyst gave better yields (80%-99%) in short reaction time (4-8 h). These commercially available cheap catalysts are more active than many reported expensive heterogeneous catalysts. Using the Copper hydroxide fresh catalyst, the yield of product 3a was 98%, while the recovered catalyst in the three subsequent cycles gave the yield of 94%, 90% and 88% respectively.