Some tris(trimethylsilyl)methyl derivatives of boron, aluminum and gallium

Eaborn, Colin; El-Kheli, Mohamed N. A.; Retta, Negussie; Smith, J. David

doi:10.1016/s0022-328x(00)98796-5

Cited by 31 publications

(4 citation statements)

References 18 publications

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“…The trisylaluminum dichloride [(Me 3 Si) 3 CAlCl 2 ] (without coordinated solvent) was first prepared in low yield by Eaborn et al using the reaction of trisyllithium [(Me 3 Si) 3 CLi·2 THF] and aluminum trichloride. However, we were not able to reproduce this reaction and observed only products from cleavage reactions of ether .…”

Section: Resultsmentioning

confidence: 99%

Synthesis and Characterization of Tris(trimethylsilyl)methyl Halide Derivatives of Aluminum: Potential Precursors for Low-Valent Aluminum Compounds. Crystal Structures of [{(Me₃Si)₃CAlF₂}₃], [(Me₃Si)₃CAlX₂·THF] (X = Cl, Br, I), and [{(THF)₂K(Me₃Si)₃CAlF₂(μ-F)F₂AlC(SiMe₃)₃}₂]

et al. 1998

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The novel bulky alkylaluminum dihalogenides [(Me 3 Si) 3 CAlX 2 ‚THF] (X ) F, 1; X ) Cl, 4; X ) Br, 5; X ) I, 6) and dialkylaluminum halogenides [(Me 3 Si) 3 CAl(Me)X‚THF] (X ) Cl, 8; X ) Br, 9; X ) I, 10) have been prepared by reaction of the mixed trialkylalane [(Me 3 Si) 3 CAlMe 2 ‚THF] with Me 3 SnX (X ) F, Cl) and X 2 (X ) Br, I) in a 2:1 and 1:1 molar ratio, respectively. The coordinated THF molecule of compound 1 can be removed by heating in vacuo to yield the trimeric solvent-free organoaluminum difluoride [{(Me 3 Si) 3 CAlF 2 } 3 ] (2). Compound 2 shows no cocatalytic activity with group 4 metallocenes for ethylene polymerization. Reaction of [(Me 3 Si) 3 CAlF 2 ‚THF] (1) with potassium fluoride gave the unusual coordination compound [{(THF) 2 K(Me 3 Si) 3 CAlF 2 (µ-F)F 2 AlC(SiMe 3 ) 3 } 2 ] (3). The molecular structures of compounds 2-6 have been determined by X-ray structure analysis. Compound 2 is the first structurally characterized organoaluminum difluoride, and 6 is the first structurally characterized organoaluminum diiodide.

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Section: Resultsmentioning

confidence: 99%

Synthesis and Characterization of Tris(trimethylsilyl)methyl Halide Derivatives of Aluminum: Potential Precursors for Low-Valent Aluminum Compounds. Crystal Structures of [{(Me₃Si)₃CAlF₂}₃], [(Me₃Si)₃CAlX₂·THF] (X = Cl, Br, I), and [{(THF)₂K(Me₃Si)₃CAlF₂(μ-F)F₂AlC(SiMe₃)₃}₂]

et al. 1998

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“…It has been shown that metal halides may catalyse the reaction between (Me 3 Si) 3 CLi and THF [14]. In the presence of traces of moisture the 5,5,5-tris(trimethylsilyl)pentoxymetal product may give (Me 3 -Si) 3 C(CH 2 ) 4 OH, which rearranges with migration of SiMe 3 from carbon to oxygen [15] to give (Me 3 Si) 2 CH-(CH 2 ) 4 OSiMe 3 . This may then react with LiOH to give LiOSiMe 3 [12].…”

Section: Synthesesmentioning

confidence: 99%

Synthesis and crystal structures of some cobalt halide derivatives containing alkyl or silanolato groups

Asadi

Eaborn

Hill

et al. 2005

Journal of Organometallic Chemistry

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“…The retro-Brook (or West) rearrangement 2 has also been reported; both rearrangements are now well-established transformations in organic synthesis. There are also several examples which may involve [1,5]- or [1,6]-Brook or retro-Brook rearrangements; however, no evidence was provided that the silyl migrations occur via an intramolecular process 1 The family of Brook rearrangements. …”

mentioning

confidence: 99%