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Published on: June 8, 2022
Nickel-Imidazolium Low Transition Temperature Mixtures with Lewis-Acidic Character
Mario Martos1, Isidro M Pastor1
1Institute of Organic Synthesis, University of Alicante, ctra. San Vicente del Raspeig s/n, San Vicente del Raspeig, 03690 Alicante, Spain.
A novel nickel-based imidazolium low transition temperature mixture (LTTM) acts as both solvent and catalyst. This green chemistry approach efficiently synthesizes allylated heterocycles using allylic alcohols without additional purification.
Area of Science:
- Green chemistry
- Catalysis
- Organic synthesis
Background:
- Low transition temperature mixtures (LTTMs) are versatile solvents in organic synthesis.
- LTTMs can form catalytically active species, enabling their use as catalysts.
- Developing efficient and environmentally friendly synthetic protocols is crucial.
Purpose of the Study:
- Introduce a novel nickel-based imidazolium LTTM.
- Investigate its thermal properties.
- Explore its catalytic application in solvent-free allylation reactions.
Main Methods:
- Synthesis and characterization of a nickel-based imidazolium LTTM.
- Thermal behavior analysis.
- Application in solvent-free allylation of heterocycles with allylic alcohols.
Main Results:
- The nickel-based imidazolium LTTM exhibits favorable thermal behavior.
- The LTTM effectively catalyzes the allylation of heterocycles.
- High yields of allylated products were obtained without additional purification steps.
Conclusions:
- Nickel-based imidazolium LTTMs can serve as effective catalysts for organic synthesis.
- This solvent-free protocol offers an environmentally friendly alternative.
- The developed system demonstrates high efficiency and product selectivity.
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