Complexes of tris(pentafluorophenyl)boron with nitrogen-containing compounds: Synthesis, reactivity and metallocene activation

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• 作者：Francesca Focante ; Pierluigi Mercandelli ; Angelo Sironi and Luigi Resconi
• 关键词：Perfluoroarylboranes ; Boron//www.sciencedirect.com/scidirimg/entities/glyph_sbnd.gif" alt="single bond" border=0>nitrogen complexes ; Lewis acid– ; Lewis base adducts ; Metallocenes ; Ion pairs
• 刊名：Coordination Chemistry Reviews
• 出版年：2006
• 期刊代码：27_00108545
• 类别：ch
• 出版时间：January 2006
• 卷：250
• 期：1-2
• 页码：170-188
• 文件大小：1071 K

摘要

The strong Lewis acid tris(pentafluorophenyl)boron, B(C₆F₅)₃, reacts with several nitrogen-containing Lewis bases (nitriles, amines, imines, pyridines, etc.) and also with non-basic substrates (such as pyrroles and indoles) producing in both cases the BN coordination adduct. With particular substrates (some tertiary amines, the imine ^tBu(Me)CNBn, N-methyl-pyrrole and -indole,) the 1:1 borane/N-compound reaction produces zwitterions where a new BC bond is generated. Some of the borane–N-compound adducts present Brønsted acidity and can be reacted with di-methyl group 4 complexes with generation of weakly associated ion pairs, which are active catalysts for the polymerization of olefins.