Abstract
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.
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