作者:Michael H. Holthausen、Ian Mallov、Douglas W. Stephan
DOI:10.1039/c4dt02406k
日期:——
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.
使膦亚胺R 3 PNSiMe 3(R = t -Bu :1a,R = Cy:1b,R = Et:1c,R = Ph:1d)与一系列氯和氟硼烷(9Cl-9-BBN,( C 6 F 5)2 BCl,PhBCl 2和Mes 2 BF )通过Me 3访问一个膦亚胺取代的硼烷家族(2a–d,3b–d,4c,d和6a,b)消除SiX(X = Cl,F)。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)。所有化合物均已得到充分表征,并通过X射线衍射确定了许多分子结构。