Tridentate Lewis Acids: Boron-, Silicon- and Gallium-Functionalised Tris(dimethylsilyl)methanes

被引:11
|
作者
Weisheim, Eugen [1 ]
Schwartzen, Anna [1 ]
Kuhlmann, Lisa [1 ]
Neumann, Beate [1 ]
Stammler, Hans-Georg [1 ]
Mitzel, Norbert W. [1 ]
机构
[1] Univ Bielefeld, Fac Chem, Ctr Mol Mat CM2, Chair Inorgan & Struct Chem, Univ Str 25, D-33615 Bielefeld, Germany
关键词
Lewis acids; Metalation; Hydrosilylation; Fluorination; Hydroboration; Silanes; UNSATURATED ALUMINUM ATOMS; HYDROGALLATION REACTIONS; HYDRIDE SPONGE; NOBEL LECTURE; FLUORIDE; CHEMISTRY; BORANE; 1,8-NAPHTHALENEDIYLBIS(DIMETHYLBORANE); BIS(TRIMETHYLSILYL)ACETYLENE; BIS(PENTAFLUOROPHENYL)BORANE;
D O I
10.1002/ejic.201501432
中图分类号
O61 [无机化学];
学科分类号
070301 ; 081704 ;
摘要
Flexible tridentate Lewis acids based on new trisilylmethane scaffolds with three ethynyl groups {Me3SiC[Si(Me)(2)CC-H](3)} and three vinyl groups {Me3SiC[Si(Me)(2)CH=CH2](3)}, respectively, have been synthesised and functionalised by metallation with gallium organyls to yield Me3SiC[Si(Me)(2)CC-GaR2](3) (R = Me, Et). Hydrometallation of the trisilylmethane frameworks with HB(C6F5)(2) and various chlorosilanes afforded flexible poly-Lewis acids equipped with B(C6F5)(2), SiCl3, SiMeCl2 and SiMe2Cl substituents. The reaction of these silicon-containing tridentate Lewis acids with SbF3 led to fluorine-substituted poly-Lewis acids of the type Me3SiC[Si(Me)(2)CH2CH2SiMe3-nFn](3) (n = 1-3). All the compounds were characterised by multinuclear NMR spectroscopy, mass spectrometry, elemental analyses and some by X-ray diffraction.
引用
收藏
页码:1257 / 1266
页数:10
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