α-Carboxylate Phosphabetains in Alkylation and Complexation Reactions

Alkylation reactions of α-carboxylate phosphabetaines were carried out and studied to enhance the biological activity of previously synthesized carboxylate phosphabetaines. As a result of these reactions, the original structure was destroyed with the formation of quaternary salts of phosphonium triiodide. The structure and composition were confirmed by a complex of physical research methods, including NMR, IR spectroscopy, and elemental analysis. The bactericidal and antimycotic activity of the synthesized salts was assessed. The compounds showed activity similar to that of commercial drugs. The reactions of complexation of these structures were also investigated. In the reactions with nickel and copper chloride, complexes were isolated and characterized. The structure of the nickel complex was unambiguously confirmed by the data obtained with the help of single-crystal X-ray diffraction analysis.