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Atomic Layer Deposition of Vanadium Dioxide and a Temperature-dependent Optical Model
Published on: May 23, 2018
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Vanadium-catalyzed chlorination under molecular oxygen.
Toshiyuki Moriuchi1, Yasuhiro Fukui1, Satoshi Kato1
1Department of Applied Chemistry, Graduate School of Engineering, Osaka University, Yamada-oka, Suita, Osaka 565-0871, Japan.
Journal of Inorganic Biochemistry
|February 17, 2015
Summary
This study introduces a novel vanadium-catalyzed chlorination of ketones and alkenes using aluminum chloride and molecular oxygen. This efficient method also demonstrates ketone iodination with aluminum iodide.
Area of Science:
- Organic Chemistry
- Catalysis
- Green Chemistry
Background:
- Efficient and selective halogenation methods are crucial in organic synthesis.
- Developing catalytic systems that utilize readily available oxidants like molecular oxygen is highly desirable.
Purpose of the Study:
- To develop a novel catalytic system for the chlorination of ketones and alkenes.
- To explore the use of vanadium catalysts with Lewis acids and co-catalysts for halogenation reactions.
- To investigate the application of this system for both chlorination and iodination.
Main Methods:
- Vanadium-catalyzed chlorination of ketones and alkenes.
- Utilizing aluminum chloride (AlCl3) as both a Lewis acid and chloride source.
- Employing tetrabutylammonium iodide (Bu4NI) as a co-catalyst.
- Performing reactions under atmospheric molecular oxygen.
- Investigating the analogous iodination of ketones using aluminum iodide (AlI3).
Main Results:
- Successful catalytic chlorination of ketones and alkenes was achieved.
- The reaction yielded vic-dichlorides from alkenes.
- Aluminum chloride demonstrated dual functionality as a Lewis acid and chloride source.
- Ketone iodination was successfully induced using a vanadium catalyst, Bu4NI, and AlI3 under oxygen.
Conclusions:
- A new, efficient vanadium-catalyzed chlorination method for ketones and alkenes has been developed.
- The catalytic system offers a facile route to vic-dichlorides.
- The methodology is versatile, enabling both chlorination and iodination reactions.
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