Ionic liquids and catalyst immobilization. Recent advances

Takahide Fukuyama*, Ilhyong Ryu

*Corresponding author for this work

    Research output: Contribution to journalReview articlepeer-review

    11 Scopus citations


    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.

    Original languageEnglish
    Pages (from-to)503-510
    Number of pages8
    JournalYuki Gosei Kagaku Kyokaishi/Journal of Synthetic Organic Chemistry
    Issue number5
    StatePublished - 1 Jan 2005


    • Biphasic workup
    • Catalyst
    • Immobilization
    • Ionic liquid
    • Microflow system
    • Recycle


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