【摘要】 本文报道乙烯基膦酸酯在钯催化下的芳基化和烯基化反应.乙烯基膦酸酯与芳基溴化合物在钯催化下反应,可顺利地生成相应的E式2-芳基取代乙烯基膦酸酯（6,7）.操作简便,反应条件温和,产率中平,是合成2-芳基取代乙烯基膦酸酯较好的方法.测定了不同取代芳基乙烯基膦酸二乙酯的³¹p NMR δ值,它们与Hammett取代基常数σ之间有较好的线性关系.乙烯基膦酸酯亦能与烯基溴化合物反应,生成相应的取代1,3-二烯基膦酸酯（10）,但反应时间较长,产率较低.由NMR推定了6,7和10的构型.更多还原

【Abstract】 Dialkyl ethenephosphonates, on reaction with aryl bromides in the presence of palladium catalyst, gave the corresponding 2-arylethenephosphonates （6 or 7） in moderate to good yields. Thus, it provides a simple and facile synthesis of 2-arylethenephosphonates. Their ³¹P NMR chemical shifts show a linear correlation with the Hammett σ constants of the substituents in the benzene ring. Similarly, diethyl ethenephosphonate underwent palladium-catalyzed vinylation reaction with vinyl bromides and the corresponding substituted 1, 3-dienephosphonates （10） were formed, though in less satisfactory yields. The configurations of compounds 6, 7 and 10 were determined by NMR speclroscopy.更多还原