Encyclopedia of Ionic Liquids

Living Edition
| Editors: Suojiang Zhang

Ionic Liquid in Cyclization Reaction

  • Shaorui Yan
  • Shuai ZhangEmail author
Living reference work entry
DOI: https://doi.org/10.1007/978-981-10-6739-6_40-1

Definition

Cyclic frameworks, especially heterocycle skeleton, widely existing in organic compounds, natural products, and drugs, are of great importance in both academy and industry. Ionic liquids (ILs) have shown excellent characteristics compared with traditional organic solvents, in the construction of cyclic frameworks by cyclization reactions, e.g., Diels-Alder (DA) reaction, cyclopropanation, the synthesis of aziridines, Prins cyclization, and so on. IL species employed in the cyclization reaction mainly belong to ammonium cation-based ones, in which tetraalkylammonium, imidazolium, and pyridinium ions act as cations, while halide (X), bis((trifluoromethyl)sulfonyl)imide (NTf2), tetrafluoroborate (BF4), hexafluorophosphate (PF6), and bisulfate (HSO4) usually serve as anions.

Scientific Fundamentals

Basic Definitions About the Application of ILs in Cyclization Reaction

ILs, as an environmental-friendly alternative to traditional organic solvents, have attracted wide...

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Copyright information

© Springer Nature Singapore Pte Ltd. 2019

Authors and Affiliations

  1. 1.College of Chemistry and Material ScienceShandong Agricultural UniversityTaianChina

Section editors and affiliations

  • Liang-Nian He
    • 1
  • Bhalchandra Bhanage
    • 2
  1. 1.State Key Laboratory and Institute of Elemento-Organic Chemistry, College of ChemistryNankai UniversityTianjinPeople’s Republic of China
  2. 2.Department of ChemistryInstitute of Chemical TechnologyMumbaiIndia