Memoirs of the Graduate Schools of Engineering and System Informatics Kobe University, No. 2, pp. 8-11, 2010
Takashi SOMETE1, Daiki MONGUCHI1, Yuji MIYAZAKI1, Atsunori MORI1
1Graduate School of Engineering, Department of Chemical Science and Engineering
(Received November 4, 2010; Accepted December 14, 2010; Online published December 17, 2010)
Keywords: Oxidative dimerization, N-Methyl-benzimidazole, Copper catalyst, Mass spectrum, CH functionalization
An unexpected side reaction takes place in the oxidative dimerization of an imidazole derivative catalyzed by CuCl2 (10 mol%) and Ag2CO3 (20 mol%). Unidentified product, whose estimated molecular weight is 278, is obtained along with the dimerized product at the CH bond at the 2-position (MW = 262). Measurements of NMR and mass spectra and several transformation reactions suggest a possible structure.