100418-05-1Relevant academic research and scientific papers
First characterization of a compound with a tin-germanium double bond: The dimesityl(diisitylstanna)germene (Is)2Sn=Ge(MeS)2
Chaubon, Marie-Anne,Escudie, Jean,Ranaivonjatovo, Henri,Satge, Jacques
, p. 2621 - 2622 (2007/10/03)
The dimesityl(diisitylstanna)germene 4 [isityl (Is) = 2,4,6-triisopropylphenyl] is synthesized by dehydrofluorination of the corresponding (fluorostannyl)germane 1 by tert-butyllithium at low temperature; its structure is evidenced at -20°C by 119Sn NMR spectroscopy (δ + 360), by addition of water and methanol to the tin-germanium double bond and by a [2 + 2] cycloaddition with benzaldehyde; warming the stannagermene 4 to room temperature affords the dimesityl(tetraisityldistanna)germirane 8.
Improved synthesis of 1,2-dichlorotetramesityldigermane and other mesitylgermanes
Cooke, Jeffrey A.,Dixon, Craig E.,Netherton, Matthew R.,Kollegger, Gerlinde M.,Baines, Kim M.
, p. 1205 - 1217 (2008/10/09)
An improved procedure for the synthesis of 1,2-dichlorotetramesityldigermane is reported.
Nouveaux aryldihydrogermyllithium
Castel, A.,Riviere, P.,Satge, J.,Desor, D.
, p. 49 - 61 (2007/10/02)
The new aryldihydrogermyllithium complexes RH2GeLi (R = Ph, Mes) are prepared, in good yields, by metallation of the parent trihydrogermane with t-butyllithium in THF.They are characterized by alkylation reactions with MeI.Some germylation reactions are reported: they lead to the formation of new functional aryldihydrogermanes and aryldigermanes by a nucleophilic substitution.These aryldihydrogermyllithium complexes react also with acyl chlorides RCOCl (R = Ph, Mes) to give new diacyl- and triacyl-germanes.These easily add to the carbonyl group of aromatic aldehydes, thereby giving the corresponding α-germyl alcohols.
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.
