Аннотация:
Quarternization of 3-(diphenylphosphino)propanoic acid with ω-haloalkanoic acids affords novel phosphonium salts containing two carboxy groups. The phosphonium salts were treated with 1 M alkali solution to obtain corresponding carboxylate phosphabetaines. The structure of the compounds was established by IR and NMR spectroscopy, elemental analysis and X-ray single crystal diffraction.