The reaction between 2,2′-bis(diphenylphosphino)-1,1′-binaphthyl (Binap) and an equimolar amount of [Cu(OTf)₂] (where OTf = trifluoromethylsulfonate) in acetonitrile afforded the new bisphosphonium salt 1 by a mechanism that must involve two C−H bond activations and the consequent intramolecular formation of two new C−P bonds. Compound 1 was characterized by spectroscopic and X-ray diffraction methods.

中文翻译：

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基于2,2'-双（二苯基膦基）-1,1'-联萘（Binap）的新型双phosph盐的合成

之间2,2'-双（二苯基膦基）-1,1'-联萘（BINAP）和[铜（OTF）等摩尔量的反应₂ ]（其中，光学传递函数=三氟甲磺酸）的乙腈，得到新bisphosphonium盐1由一个这种机制必须涉及两个CH键的活化以及随后的两个新CP键的分子内形成。化合物1通过光谱和X射线衍射法表征。