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Updated: Sep 21, 2025
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Reliable Mechanochemistry: Protocols for Reproducible Outcomes of Neat and Liquid Assisted Ball-mill Grinding Experiments
Published on: January 23, 2018
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Mechanochemistry and Eco-Bases for Sustainable Michael Addition Reactions
Yvette Lock Toy Ki1, Armelle Garcia1, Franck Pelissier1
1Laboratory of Bio-inspired Chemistry and Ecological Innovations (ChimEco), UMR 5021, CNRS, University of Montpellier, Cap Delta, 1682 rue de la Valsière, 34790 Grabels, France.
Molecules (Basel, Switzerland)
|May 28, 2022
Summary
Sustainable Michael addition reactions were achieved using mechanochemistry and novel bio-sourced catalysts (Eco-bases). This green chemistry approach offers efficient, solvent-free synthesis with recyclable catalysts, advancing sustainable chemical processes.
Area of Science:
- Green Chemistry
- Mechanochemistry
- Organic Synthesis
Background:
- Michael addition reactions are fundamental in organic synthesis.
- Traditional methods often involve harsh conditions, solvents, and less sustainable catalysts.
- Developing efficient and environmentally friendly synthetic routes is crucial.
Purpose of the Study:
- To develop a sustainable and efficient protocol for Michael addition reactions.
- To explore the use of mechanochemistry under mild conditions.
- To introduce and characterize novel bio-sourced catalysts (Eco-bases).
Main Methods:
- Mechanochemical synthesis using ball milling.
- Optimization of reaction conditions with classical bases.
- Preparation and characterization of bio-sourced Eco-bases (using MP-AES, XRPD, EBSD/EDS, HRTEM/EDX, ion chromatography).
- Application of Eco-bases in Michael addition reactions.
Main Results:
- Efficient Michael addition reactions achieved with 84-95% yields in 2-6 hours.
- Solvent-free conditions and low catalyst loading (0.1 eq.) were employed.
- Novel heterogeneous Eco-bases, rich in potassium (K2Ca(CO3)2), were synthesized from plants.
- Eco-bases demonstrated high efficiency, recyclability (4 cycles), and versatility with various substrates.
- Successful application in the synthesis of functionalized alkenone derivatives.
Conclusions:
- The combination of Eco-bases and mechanochemistry provides a highly sustainable and efficient method for Michael addition.
- This approach minimizes waste, uses renewable resources, and reduces energy consumption.
- The developed protocol contributes to the advancement of green chemistry and mechanochemistry practices.
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