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Recently, the development of olefin metathesis polymerization advanced the field of polymer synthesis. Simply put, the reorganization of substituents on their double bonds between two olefins in the presence of a catalyst is known as the olefin metathesis reaction. The use of metathesis reaction for polymer synthesis is called olefin metathesis polymerization.
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Related Experiment Video

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Highly Stereoselective Synthesis of 1,6-Ketoesters Mediated by Ionic Liquids: A Three-component Reaction Enabling Rapid Access to a New Class of Low Molecular Weight Gelators

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C18:1 Methyl ester metathesis in [bmim][X] type ionic liquids.

Priya A Thomas¹, Bassie B Marvey

¹Department of Chemistry, North-West University, Mafikeng, South Africa. priyaaregi@gmail.com

International Journal of Molecular Sciences

|January 21, 2010

Summary

Ionic liquids ([bmim][X]) improved methyl oleate metathesis using Grubbs catalysts, showing higher selectivity and performance than traditional organic solvents. This research highlights ILs as superior reaction media for olefin metathesis.

Keywords:

RuCl2(PCy3)(L)(=CHPh)[bmim][X]metathesis methyl oleate

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Imine Metathesis by Silica-Supported Catalysts Using the Methodology of Surface Organometallic Chemistry

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Published on: October 18, 2019

Area of Science:

Green Chemistry
Catalysis
Organic Synthesis

Background:

Olefin metathesis is a vital reaction in organic synthesis.
Conventional organic solvents pose environmental and safety concerns.
Ionic liquids (ILs) offer tunable properties as alternative reaction media.

Purpose of the Study:

To evaluate the efficacy of [bmim][X] ionic liquids (ILs) as reaction media for methyl oleate metathesis.
To compare IL performance against conventional organic solvents (PhCl, PhMe, DCM, DCE).
To investigate the influence of IL properties on catalytic performance.

Main Methods:

Utilized first and second generation Grubbs precatalysts for methyl oleate metathesis.
Compared catalytic performance in various [bmim][X] ILs (X = PF(6)(-), BF(4)(-), NTf(2)(-)) and organic solvents.
Analyzed effects of anion type, temperature, solvent polarity, viscosity, and ligand-anion interactions.

Main Results:

Achieved excellent catalytic performance and selectivity (>98%) in [bmim][X] ILs.
ILs outperformed conventional organic solvents under moderate reaction temperatures.
Identified specific anion effects and solvent properties influencing reaction outcomes.

Conclusions:

[bmim][X] ionic liquids are superior reaction media for methyl oleate metathesis compared to conventional solvents.
The choice of IL anion and reaction conditions significantly impacts catalytic efficiency and selectivity.
This study advocates for the use of ILs in sustainable olefin metathesis processes.