New di- and tricarboxylate phosphabetaines

Abstract

© 2016, Springer Science+Business Media New York.New stable tricarboxylate phosphabetaines were synthesized based on 3-(diphenylphosphino)propionic acid and unsaturated dicarboxylic acids (maleic and itaconic). A new dicarboxylate phosphabetaine was synthesized based on 1,3-bis(diphenylphosphino)propane, which did not contain any proton-donor reagents in its crystal lattice.