作者:A. Shekhadeh、N. G. Didkovskii、A. V. Dogadina、B. I. Ionin
DOI:10.1007/s11176-005-0163-8
日期:2005.1
The primary addition products in the reactions of malonic esters, cyanoacetic esters, and malononitrile with acetylenediphosphonates in acetonitrile in the presence of anhydrous potassium carbonate are potassium derivatives, viz. esters and nitriles of the corresponding 2-alkoxycarbonyl(or 2-cyano) -3,4-bis(di-alkoxyphosphinoyl)-2-potassiobut-3-enoic acid. Further hydrogen replacement for potassium in the nitriles is accompanied by isomerization involving double-bond shift and geometry change. (E)- and (Z)-3,4-bis(dial-koxyphosphinoyl)-2-cyano-2-potassiobut-3-enenitriles (the alkoxy groups are CH3O and C2H5O) are crystalline compounds; they were isolated and characterized.
在无水碳酸钾存在下,丙二酸酯、氰基乙酸酯和丙二腈与乙炔二磷酸酯在乙腈中的反应的主要加成产物是钾的衍生物,即相应的2-烷氧羧酸(或2-氰基)-3,4-双(二烷氧基膦酰基)-2-钾基丁-3-烯酸的酯和腈。在腈中对钾的进一步氢取代伴随着双键迁移和几何构型变化的异构化。(E)-和(Z)-3,4-双(烷氧基膦酰基)-2-氰基-2-钾基丁-3-烯腈(烷氧基为 CH3O 和 C2H5O)为结晶化合物;它们已被分离和表征。