Supported benzimidazole‐salen Cu(II) complex: An efficient, versatile and highly reusable nanocatalyst for one‐pot synthesis of hybrid molecules

• DOI: 10.1002/aoc.4446
• Publication Date: 2018-08-08T04:29:47Z
• Authors: Hashem Sharghi; Mahdi Aberi; Pezhman Shiri
• Keywords: Benzimidazole; One-pot synthesis; Condensation reaction; Aromatization

A novel and efficient nanocatalyst consisting of benzimidazole‐salen Cu(II) complex on surface‐modified silica (BS‐Cu(II)@SiO 2 ) was prepared. The heterogeneous characterized by FESEM, TEM, EDX, FT‐IR, XRD, ICP, TGA. used for the one‐pot synthesis some target hybrid molecules. An four component C–H bond activation/[3 + 2] cycloaddition condensation/cyclization/aromatization sequence toward triazole‐benzimidazole derivatives is disclosed. This methodology provides a general rapid synthetic route to new hybrids under mild reaction conditions. In addition, can be easily separated from mixture several times without noticeable leaching or loss its catalytic activity. We believe this interesting as well pave way design other molecules metal catalysts, respectively.