Benzimidazolyl based Schiff base palladium complex in an ionic liquid: an effective combination for Suzuki coupling |
| |
| Authors: | Vasantha Kumar Basappa Chidananda Dileep Ramakrishna Manpreet Kaur |
| |
| Institution: | 1. Department of Chemistry, Manasagangotri, University of Mysore, Mysuru, India;2. Department of Chemistry, School of Engineering Presidency University, Bengaluru, India;3. Department of Chemistry, Keene State College, Keene, NH, USA |
| |
| Abstract: | A new benzimidazole based Pd(II) Schiff base complex was prepared and its catalytic activity was evaluated for Suzuki cross-coupling reactions in ethyl-methyl imidazolium hexafluorophosphate EMIM PF6] ionic liquid at ambient temperature. The system provides a stable and reusable method for coupling reactions. Optimization for suitable reaction conditions were studied with respect to the effect of catalyst concentration, effects of additives, solvent and substituents on boronic acid. Good to excellent yields were achieved using a modest amount of the catalyst. The reaction time was less and the yield was more compared to previously reported results. In addition, the catalyst can be easily reused and recycled for six times without much loss in activity; this is an example of sustainable and green methodology. |
| |
| Keywords: | Benzimidazole Schiff base palladium ionic liquid Suzuki reaction |
|
|
