STUDIES ON THE STABILITIES OF ALKYLMETHYLAMMONIUM SALTS OF MONOMETHYL ESTERS OF PHOSPHONIC ACIDS

Abstract Abstract It has been shown by 1H NMR spectroscopy that alkylmethylammonium salts of monomethyl esters of phosphonic acids having the general formula [RN+H2CH3][−OPH(O)(OCH3)] are unstable. At ambient temperature these salts convert into the corresponding alkylammonium salts [RN+H3][−OPH(O)(OCH3)]. The effect of different substituents R on the stability of these alkylammonium cations is discussed. Key Words: Dimethyl phosphonateAminesalkylation.