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首页> 外文期刊>Dalton transactions: An international journal of inorganic chemistry >Phosphinimine-substituted boranes and borenium ions
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Phosphinimine-substituted boranes and borenium ions

机译:膦取代的硼烷和硼离子

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The phosphinimines R_3PNSiMe_3 (R = t-Bu: 1a, R = Cy: 1b, R = Et: 1c, R = Ph: 1d) are reacted with a series of chloro and fluoroboranes (9Cl-9-BBN, (C_6F_5)_2BCl, PhBCl_2 and Mes_2BF) to access a family of phosphinimine- substituted boranes (2a-d, 3b-d, 4c,d and 6a,b) via Me_3SiX elimination (X = Cl, F). The steric and electronic factors governing the formation of monomeric or dimeric products (7c,d) are presented. In addition, in some cases a Lewis acid mediated exchange of Si-bonded methyl groups for a chloro-substituent was observed (5a,b). Based on the phosphinimine-substituted boranes, a series of borenium ion salts (8b-d, 9c, 10b-d) was prepared upon reaction with MeOTf. All compounds were fully characterized and a number of molecular structures were determined by X-ray diffraction.
机译:使膦亚胺R_3PNSiMe_3(R = t-Bu:1a,R = Cy:1b,R = Et:1c,R = Ph:1d)与一系列氯硼烷和氟硼烷(9Cl-9-BBN,(C_6F_5)_2BCl ,PhBCl_2和Mes_2BF)通过Me_3SiX消除(X = Cl,F)来访问膦亚胺取代的硼烷家族(2a-d,3b-d,4c,d和6a,b)。介绍了控制单体或二聚体产物(7c,d)形成的空间和电子因素。另外,在某些情况下,观察到路易斯酸介导的硅键合的甲基交换为氯取代基(5a,b)。基于膦亚胺取代的硼烷,在与MeOTf反应后制备了一系列的硼离子盐(8b-d,9c,10b-d)。所有化合物均已充分表征,并通过X射线衍射确定了许多分子结构。

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