Abstract
This work illustrates comparative catalytic performance of two sets of cobalt complexes within a common macrocyclic ligand environment: CoII complexes 1 and 2 versus CoIII complexes 3 and 4. All four cobalt complexes functioned as the heterogeneous catalysts for the ring-opening reactions of assorted epoxides as well as Knoevenagel condensation reactions of assorted aldehydes. Cobalt(II) complexes were noted to be the superior catalysts over cobalt(III) complexes for both types of organic transformations. The observed difference in the catalytic performance of two sets of cobalt complexes has been related to the kinetic differences between CoII versus CoIII ions. All four cobalt complexes display high catalytic efficiency and excellent reusability without any apparent loss in the catalytic performance.
Original language | British English |
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Pages (from-to) | 843-852 |
Number of pages | 10 |
Journal | Journal of the Indian Chemical Society |
Volume | 95 |
Issue number | 7 |
State | Published - Jul 2018 |
Keywords
- Catalysis
- Cobalt
- Heterogeneous catalysis
- Knoevenagel condensation reactions
- Ring-opening reactions