Transition metal catalysis has found a wide range of applications in organic synthesis. However, the separation of the product from the catalyst as well as its reuse is a major drawback of homogeneous catalysis. The recent emergence of ionic liquids as alternatives to volatile organic solvents also provides an opportunity to affect immobilization of homogeneous catalysts in this unique phase. Segregation of the catalyst in the ionic liquid would allow facile separation of the products and the catalyst and recycling of the catalyst and the reaction medium. This review article focuses on catalytic reactions conducted in imidazole-based ionic liquids from the viewpoint of catalyst immobilization. A low viscosity ionic liquid, [bmim]NTf2, and its effective use in a circulatory microflow system are also highlighted.
|Number of pages||8|
|Journal||Yuki Gosei Kagaku Kyokaishi/Journal of Synthetic Organic Chemistry|
|State||Published - 1 Jan 2005|
- Biphasic workup
- Ionic liquid
- Microflow system