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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.
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页码:1257 / 1266
页数:10
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