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(1-Trimethylsilanylmethyl-vinyl)-phosphonic esters are synthesised via Wittig-Horner reactions starting from methylenediphosphonic esters. The reactions of (1-trimethylsilanylmethyl-vinyl)-phosphonic esters with NsONHCO 2 Et and CaO, produce α-methylene N-(ethoxycarbonyl) β-amino phosphonic esters, isolated up to 60% yield, through addition of (ethoxycarbonyl) amine function on the double...
Synthetic precursors of amino phosphonic acids are aziridinyl phosphonates. These compounds can be prepared through a reaction of phosphonates 2a-e with NsONHCO 2 Et and inorganic bases involving addition of an (ethoxycarbonyl)amino group onto the double bond, via a new and easy procedure.
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