title: Poly(ethylene glycol)-based ionic liquids: properties and uses as alternative solvents in organic synthesis and catalysis.
abstract: PEG-based ionic liquids are a new appealing group of solvents making the link between two distinct but very similar fluids: ionic liquids and poly(ethylene glycol)s. They find applications across a range of innumerable disciplines in science, technology, and engineering. In the last years, the possibility to use these as alternative solvents for organic synthesis and catalysis has been increasingly explored. This Review highlights strategies for their synthesis, their physical properties (critical point, glass transition temperature, density, rheological properties), and their application in reactions catalyzed by metals (such as Pd, Cu, W, or Rh) or as organic solvent (for example for multicomponent reactions, organocatalysis, CO2 transformation) with special emphasis on their toxicity, environmental impact, and biodegradability. These aspects, very often neglected, need to be considered in addition to the green criteria usually considered to establish ecofriendly processes.
authors: Institut des Biomolécules Max Mousseron (IBMM), UMR 5247 CNRS-UM I-UM II, Université Montpellier II, Place E. Bataillon, 34095 Montpellier Cedex 5 (France); Dipartimento di Scienze Fisiche e Chimiche Università dell'Aquila e Consorzio INCA, Via Vetoio, Coppito, 67100 L'Aquila (Italy).
authors: Martina Maya
authors: MM
authors: Cecchini
authors: Clarence
authors: C
authors: Charnay
authors: Francesco
authors: F
authors: De Angelis
authors: Frédéric
authors: F
authors: Lamaty
authors: Jean
authors: J
authors: Martinez
authors: Evelina
authors: E
authors: Colacino
mesh_terms: D000818:Animals; D002384:Catalysis; D060326:Chemistry Techniques, Synthetic; D006801:Humans; D052578:Ionic Liquids / Q000737:chemistry* / Q000633:toxicity; D011092:Polyethylene Glycols / Q000737:chemistry*; D012997:Solvents / Q000737:chemistry* / Q000633:toxicity
chemical_list: D052578:Ionic Liquids; D012997:Solvents; D011092:Polyethylene Glycols
keywords: heterocycles; ionic liquids; multicomponent reactions; poly(ethylene glycols); toxicity