Synthesis of a polymerizable fluorosurfactant for the construction of stable nanostructured proton-conducting membranes

J Org Chem. 2010 Oct 15;75(20):6814-9. doi: 10.1021/jo101196w.

Abstract

The synthesis of the polymerizable fluorinated surfactant sodium 1,1,2,2-tetrafluoro-2-(1,1,2,2-tetrafluoro-2-(4-vinylphenyl)ethoxy)ethanesulfonate (1) and a number of related fluorocarbon compounds is described. Compound 1 is synthesized using a copper-mediated cross-coupling reaction of 4-bromobenzaldehyde and sodium 5-iodooctafluoro-3-oxapentanesulfonate. The resulting benzaldehyde is converted to a styrene unit using a Wittig reaction with methyltriphenylphosphonium bromide in acetonitrile, using DBU as a base. This strategy for converting an iodo-functionalized fluorosurfactant to a styrene-containing fluorosurfactant is highly efficient because both reactions are performed in polar solvents and are compatible with the sulfonate moiety. In addition, the copper-mediated cross-coupling reaction is most efficient with electron-poor aryl bromides like 4-bromobenzaldehyde. We wish to employ 1 for the construction of nanostructured membranes by polymerization of 1 in a microemulsion or in lyotropic liquid crystalline phases.

Publication types

  • Research Support, Non-U.S. Gov't

MeSH terms

  • Alkanesulfonates / chemical synthesis*
  • Alkanesulfonates / chemistry
  • Fluorescent Dyes / chemical synthesis*
  • Fluorescent Dyes / chemistry
  • Membranes, Artificial*
  • Molecular Structure
  • Nanostructures / chemistry*
  • Protons*
  • Surface-Active Agents / chemical synthesis*
  • Surface-Active Agents / chemistry

Substances

  • Alkanesulfonates
  • Fluorescent Dyes
  • Membranes, Artificial
  • Protons
  • Surface-Active Agents
  • sodium 1,1,2,2-tetrafluoro-2-(1,1,2,2-tetrafluoro-2-(4-vinylphenyl)ethoxy)ethanesulfonate