摘要
应用３１ＰＮＭＲ技术研究了双膦配体１，３－（Ｅｔ２ＰＣＨ２）２Ｃ６Ｈ４和ｃｉｓ－［ＰＥｔ３）２Ｃｌ２］的反应过程，并对反应产物进行了元素分析和核磁表征。得到的结果表明，该双磷配体容易和ｃｉｓ－［Ｐｔ（ＰＥｔ３）２Ｃｌ２］发生金属环化反应。所选用的初始反应物应有利于和双膦配体形成一个中间体（过渡状态），使苯环上的Ｃ－Ｈ键被活化，这是金属环化反应得以顺利进行的关键，据此提出了可能的反应途径。
The reaction process of 1, 3 - (EPCH) CH with cis was studied by the P NMR technique and the products were characterized by elemental analysis and P NMR H NMR,Results obtained indicate that the ease of the reaction is related to the probability of forming an intermediate (or transition state)in which the aromatic C-H bond to be activated can be placed directly above the metal centre,A possible reaction pathwaywas discussed.
