120154-45-2Relevant academic research and scientific papers
Stabilization of a transient diorganogermylene by an N-heterocyclic carbene
Rupar, Paul A.,Jennings, Michael C.,Ragogna, Paul J.,Baines, Kim M.
, p. 4109 - 4111 (2008/10/09)
The synthesis of a carbene-stabilized transient germylene is presented; the resulting complex liberates free germylene upon heating, forms a stable adduct with BH3, and reacts with MeLi to displace the carbene.
The addition of organometallic reagents to tetramesityldigermene
Fujdala, Kyle L.,Gracey, David W.K.,Wong, Erica F.,Baines, Kim M.
, p. 1387 - 1392 (2007/10/03)
The thermolysis and photolysis of hexamesitylcyclotrigermane in the presence of ethylmagnesium bromide has been investigated. Under photochemical conditions, ethyldimesitylgermane, 1,2-diethyl-1,1,2-trimesityldigermane and ethyl-1,1,2,2-tetramesityldigerm
The photolysis of Si,Si-di-tert-butyltetramesitylsiladigermirane in the presence of methylmagnesium iodide
Samuel,Baines,Hughes
, p. 1474 - 1478 (2007/10/03)
The photolysis of Si,Si-di-tert-butyltetramesitylsiladigermirane in the presence of methylmagnesium iodide at 15°C has been investigated. Five products were isolated and identified from the complex product mixture: mesityldimethylgermane, dimesitylmethylg
Addition of methyl grignard reagents to germasilenes and digermenes: Unusual ligand exchange reaction of the resulting germyl grignard reagents
Dixon, Craig E.,Netherton, Matthew R.,Baines, Kim M.
, p. 10365 - 10371 (2007/10/03)
Methylmagnesium iodide (or bromide) has been found to add to tetramesitylgermasilene and tetramesityldigermene. The addition to the germasilene is regioselective, with the methyl group adding to the silicon end of the silicon-germanium double bond to produce a germylmagnesium iodide (or bromide) species. The germyl Grignard reagents give the corresponding germanes upon hydrolysis. At 110 °C in the presence of excess methylmagnesium halide, the mesityl substituents on the germyl Grignard reagent germanium atom were exchanged for methyl groups. A mechanism involving the α-elimination of MesMgX followed by the addition of MeMgX to the intermediate germylene has been proposed to explain the observed ligand exchange. Evidence for the presence of intermediate germylenes has been obtained in trapping experiments with 2,3-dimethylbutadiene.
New (diarylgermyl)lithiums
Castel,Riviere,Satge,Ko
, p. 205 - 210 (2008/10/08)
The new (diarylgermyl)lithiums R2GeHLi (2; R = phenyl, mesityl) were prepared in good yields by hydrogermolysis reactions of tert-butyllithium in THF. The stability of compounds 2 depends on the nature of the R group and the solvent. For R = Ph, in the presence of an amine (Et3N or Et2NMe), the same reaction leads to the formation of the polygermanes H(GePh2)nH (n = 2-4). The characterization of compounds 2 by IR and 1H and 13C NMR spectroscopy and their complexation with a crown ether are also reported. They are characterized by deuterolysis and alkylation reaction (with MeI and Me2SO4). Their germylation reactions with Ge-Cl reagents constitute a convenient way for synthesizing organo-hydropolygermanes. Compounds 2 also react with acyl chlorides to give new germyl ketones, R2HGeCOR′, and the unexpectedly stable β-germyl diketone Ph2Ge(COMes)2.
Arylhydrogermyllithiums: synthese et applications
Castel, Annie,Riviere, Pierre,Satge, Jacques,Ko, Young-Hoon
, p. C1 - C4 (2007/10/02)
New organohydrogermyllithium are prepared in good yields from hydrogermolysis reactions with t-butyllithium in THF.Alkylation and germylation of the germanium-lithium bond in these compounds are efficient reactions and a convenient way for synthesis of organohydropolygermanes.These reagents are also useful for the formation of unknown hydrogermylmagnesium compounds.
