Abstract
Abstract Fluorinated α-C-and N-arylsubstituted aminomethanephosphonic acid diethylesters 5 are prepared in high yields by a „two-step“ procedure: mixing equimolar amounts of fluorinated benzaldehydes 1 and anilines 2 to benzaldehyde-(N-aryl-)imines 3. Subsequently N-arylamino-arylmethanephosphonic acid diethylesters 5 are obtained by addition of diethyl phosphite 4 to the imines 3. All compounds are characterized by 31 P {1 H}, 1H and 19F NMR spectroscopical investigations. External biological studies involving the 27 new aminophosphonic acid esters 5 show insecticidal activity of N-4-trifluoromethoxy-phenylamino-phenylmethanephosphonic acid diethylester 5h towards harmful and parasitic insects.
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