Preparation and Characterization of Tris(trimethylsilyl)germylzinc Chloride and Bis[tris(trimethylsilyl)germyl]zinc
作者:Masato Nanjo、Takashi Oda、Kunio Mochida
DOI:10.1246/cl.2002.108
日期:2002.1
The germylzinc chloride 1 has a dimeric structure consisting of two μ-Cl atoms. The compound 1 reacted with (Me3Si)3GeLi in diethyl ether to give [(Me3Si)3Ge]2Zn (2), quantitatively. The structure of bis(germyl)zinc 2 has been also elucidated by X-ray diffraction.
(Me3Si)3GeZnCl (1) 的分子结构已通过单晶 X 射线衍射确定。锗基氯化锌1具有由两个μ-Cl原子组成的二聚体结构。化合物1在乙醚中与(Me3Si)3GeLi反应,定量得到[(Me3Si)3Ge]2Zn(2)。双(锗基)锌 2 的结构也已通过 X 射线衍射阐明。
oligosilylalkynes were converted to the respective dicobalt hexacarbonyl complexes. These compounds were found to be surprisingly reactive, indicating Si−Si bond activation in the coordination sphere of the cobalt atoms. The presence of more than one silicon−siliconbond restricted clean conversions, and therefore the pentamethyldisilanylphenylacetylene complex was prepared, which engaged in defined reactions. The
The thermal and photochemical behavior of phenylethynyltris(trimethylsilyl)germane (1) has been reported. The thermolysis of 1 in the absence of a trapping agent in a sealed glass tube at 240 °C for 6 h gave 1,3-bis(trimethylsilyl)-1-tris(trimethylsilyl)germyl-1-germaindene (2) in 18% yield, together with phenyl(trimethylsilyl)acetylene in 60% yield. Similar thermolysis of 1 in the presence of 2,3-dimethylbutadiene
Tris(trimethylsilyl)silyl versus tris(trimethylsilyl)germyl: Radical reactivity and oxidation ability
作者:Jacques Lalevée、Nicolas Blanchard、Bernadette Graff、Xavier Allonas、Jean Pierre Fouassier
DOI:10.1016/j.jorganchem.2008.08.039
日期:2008.11
(TMS)3SiH toward the t-butoxyl, the t-butylperoxyl and the phosphinoyl radicals. A similar behavior is noted for an aromatic ketonetriplet state. II exhibits a lower absolute electronegativity: accordingly, the addition to electron rich alkenes is less efficient than for I. Radical II is also found less reactive for both the peroxylation (II+O2→II-O2) and the halogen abstraction reactions. The rearrangement
Hydrogermylation of 5-Ethynyluracil Nucleosides: Formation of 5-(2-Germylvinyl)uracil and 5-(2-Germylacetyl)uracil Nucleosides
作者:Yong Liang、Jean-Philippe Pitteloud、Stanislaw F. Wnuk
DOI:10.1021/jo400590z
日期:2013.6.7
A stereoselective radical-mediated hydrogermylation of the protected 5-ethynyluracil nucleosides with trialkyl-, triaryl,- or tris(trimethylsilyl)germanes gave (Z)-5-(2-germylvinyl)uridine, 2′-deoxyuridine, or ara-uridine as major products. Reaction of the β-triphenylgermyl vinyl radical intermediate with oxygen and fragmentation of the resulting peroxyradical provided also 5-[2-(triphenylgermyl)acetyl]pyrimidine