Calcium ferrite, an efficient catalyst for knoevenagel condensation(A green approach)

Abstract

Calcium ferrite NPs catalyst have been used as a cheaper and highly efficient catalyst for Knoevenagel condensation of active methylene substrate with various carbonyl compounds affording condensed products in excellent yields in shorter reaction time. The developed greener protocol is very simple, involving cleaner work up and the synthesized products do not require further purification. The catalyst can easily be removed and reused at least for four times without any appreciable change in reactivity.

Synthesis of New Knoevenagel Derivative using Fe3O4 Magnetic Nanoparticals

“…In this type of reactions, the catalyst can be recovered by filtration and it can be reuse for the next cycle. However, it is worthy to mention in spite of several advantages experienced practically in using of heterogeneous catalysts, due to the nanosized particles used, few limitations to the sustainability are observed [20][21][22][23][24] .…”

An Efficient Solvent Free Microwave Assisted MgFe2O4 Magnetic Nanoparticles Catalyzed Green Protocol Towards Michael Addition

“…Aiming at the above target, and our keen interest in development of green methodologies [30][31][32] we herein report a simple, highly efficient microwave assisted green protocol for C-C bond formation via Michael addition reaction using magnetic MgFe 2 O 4 nanoparticles as the reusable heterogeneous catalyst in the solvent free condition. The developed strategy acts as simple facile and environment friendly protocol for the conjugate addition of active methylene compounds to electron deficient alkenes under solvent free conditions, with shorter reaction time using a reusable heterogeneous catalyst.…”