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Fluorophilicity switch by solvation.

Akihiro Orita1, Sumiyo Man-e, Junzo Otera

  • 1Department of Applied Chemistry, Okayama University of Science, Ridai-cho, Japan.

Journal of the American Chemical Society
|March 30, 2006
PubMed
Summary
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New fluorous distannoxanes, despite high fluorine content, show unique solubility. They are insoluble in fluorocarbons and hydrocarbons but soluble in polar solvents, enabling miscibility in two-phase systems.

Area of Science:

  • Organometallic Chemistry
  • Fluorine Chemistry
  • Materials Science

Background:

  • Organotin compounds, particularly distannoxanes, are explored for unique chemical properties.
  • Fluorous chemistry utilizes highly fluorinated compounds for specialized applications.
  • Solubility and phase behavior are critical factors in chemical synthesis and material design.

Purpose of the Study:

  • To synthesize novel fluorous distannoxanes with high fluorine content.
  • To investigate the solubility and phase behavior of these new compounds in various solvents.
  • To explore their potential application in creating homogeneous solutions from immiscible phases.

Main Methods:

  • Synthesis of fluorous distannoxanes [XRf2SnOSnRf2Y]2 via reactions involving silver salts.

Related Experiment Videos

  • Characterization of solubility in fluorocarbons, hydrocarbons, haloalkanes, and polar organic solvents (EtOAc, acetone, THF).
  • Observation of phase behavior in two-phase mixtures of fluorocarbon and EtOAc upon addition of the synthesized distannoxanes.

    • Main Results:

    • Successful preparation of fluorous distannoxanes 2 and 3 as hydrates.
    • Compounds exhibited complete insolubility in fluorocarbons, hydrocarbons, and haloalkanes.
    • Demonstrated solubility in polar organic solvents like EtOAc, acetone, and THF.
    • Addition to fluorocarbon/EtOAc mixtures resulted in miscibility, forming homogeneous solutions.

    Conclusions:

    • The synthesized fluorous distannoxanes possess unique solubility profiles, contrasting with typical fluorous compounds.
    • Their ability to bridge the solubility gap between fluorous and organic phases opens possibilities for novel solvent systems.
    • These compounds could be valuable in applications requiring the manipulation of phase behavior and the creation of homogeneous reaction media.