作者:F. Ramirez、M. Nagabhushanam、C.P. Smith
DOI:10.1016/s0040-4020(01)82484-4
日期:1968.1
Spirooxyphosphoranes with quintuply-connected phosphorus were made from the reaction of phenanthrenequinone, benzil, biacetyl, and 1-phenylpropanedione with 5-membered and 6-membered cyclic phosphite esters and amides. The P31 NMR spectra were compared with those of the oxyphosphoranes derived from open-chain trimethyl and triphenyl phosphites. Further comparisons were made with spiroaminooxyphosphoranes
带有五重连接磷的螺氧基磷烷是由菲醌,苯甲酰,联乙酰和1-苯基丙烷二酮与5元和6元环状亚磷酸酯和酰胺反应制得的。将P 31 NMR光谱与衍生自开链亚磷酸三甲酯和亚磷酸三苯酯的氧代膦酸酯的光谱进行了比较。与螺氨基氧基膦进行的进一步比较导致P 31的正值大大降低NMR位移,Δ≅20至23 ppm。6元环的影响可以忽略不计。在五元环丙氧基磷杂环戊烷中用氮取代内环氧导致位移的正值Δ≅5 ppm略有增加。用氮替代环外氧会导致位移的正值Δ≅2至4 ppm略有下降。亚磷酸亚乙酯和2,2-二甲基-13-丙二醇环状亚磷酸酯的苯酯对α-二羰基化合物的反应性低于相应的甲酯。