Abstract
Reactions of some CH-acids with dimethyl dialkylaminoethynephosphonates were studied aiming to develop methods of syntheses of the functionalized organophosphorus compounds. Reactions with malonodinitrile, ethyl cyanoacetate, and benzenesulfonylacetonitrile were shown to proceed effectively in anhydrous acetonitrile in the presence of catalytic amounts of potassium carbonate to form products of CHacids addition at the triple bond followed by prototropic isomerization to give the corresponding β-dialkylamino-β-phosphonomethyl-α-substituted acrylonitriles. In reaction with malonic acid aminoethynephosphonates are hydrolyzed to form phosphonoacetic acid dialkylamides as main products.
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