In nearly every total synthesis, silylating agents are employed in synthetic steps to protect sensitive functional groups. A Pt‐catalyzed hydrosilylation of various unsaturated substrates to prepare novel symmetrical and unsymmetrical disilazanes is described. The developed synthetic methodology is widely applicable and tolerates all manner of functional groups (e.g., amines, ethers, esters, halogens
A new catalytic route to synthesis of silylgermylethynes
作者:Bogdan Marciniec、Hanna Ławicka、Beata Dudziec
DOI:10.1016/j.jorganchem.2007.10.039
日期:2008.1
siloxanes, silazanes, bis(silyl)benzene and bis(silyl)ethane gives monoethynylgermyl substituted vinyldisilicon products with high yields and selectivity, however, accompanied by traces of dialkynylgermyl derivatives. All catalytic results as well as those of stoichiometric study on the insertion of ethynylgermane into Ru–Si bond have permitted proposing mechanistic schemes of the reaction examined.
可以通过最近报道的称为炔烃与乙烯基硅化合物的甲硅烷基化偶联的催化方法,有效地合成已知为潜在的有机金属试剂和光电子材料前体的甲硅烷基甲基萘。[RuHCl(CO)(PR 3)n ](R = i Pr,Cy,Ph; n = 2–3)在最佳条件下有选择地产生各自的甲硅烷基锗。乙炔基锗烷与二乙烯基硅衍生物(如硅氧烷,硅氮烷,双(甲硅烷基)苯和双(甲硅烷基)乙烷)的甲硅烷基化可得到高收率和高选择性的单乙炔基锗烷基取代的乙烯基二硅产品,但伴有痕量的二炔基锗烷基衍生物。所有催化结果以及将乙炔基锗烷插入Ru-Si键的化学计量研究都提出了研究反应机理的方案。
Sila-Pharmaka, 26. Mitt. [1]. Darstellung und Eigenschaften potentiell curarewirksamer Silicium-Verbindungen, III / Sila-Pharmaca, 26th Communication [1]. Preparation and Properties of Silicon Compounds with Potential Curare-Like Activity, III
作者:Reinhold Tacke、Haryanto Linoh、Moayad T. Attar-Bashi、William S. Sheldrick、Ludger Ernst、Roland Niedner、Joachim Frohnecke
DOI:10.1515/znb-1982-1119
日期:1982.11.1
The potentially curare-like silicon compounds 8a-8f wore synthesized and investigated with respect to their structure-activity relationships. The conformations of the compounds in the solid state and in solution were studied by X-ray diffraction analysis (8a-8e) and 1H NMR spectroscopy (8a-8f), respectively. The muscle relaxing properties of 8a-8f were investigated on the mouse. The observed structure-activity
潜在的类箭毒硅化合物 8a-8f 被合成并研究了它们的结构-活性关系。分别通过 X 射线衍射分析 (8a-8e) 和 1 H NMR 光谱 (8a-8f) 研究了固态和溶液中化合物的构象。在小鼠身上研究了 8a-8f 的肌肉松弛特性。观察到的构效关系与神经肌肉阻滞剂的经典“14 Å 模型”不符。
A new protocol for synthesis of bifunctional alkynyl[vinyl or (E)-alkenyl]substituted organosilicon compounds
A new efficient route for selective synthesis of various, novel alkynyl(vinyl)substituted silicon (6) and alkynyl[(E)-alkenyl]substituted silicon compounds (9) via silylative coupling of alkynes and their products catalyzed by ruthenium(+2) complexes is described. The tandem procedure facilitates the formation of 9 synthesized in a high yield and stereoselectivity by a sequential silylative coupling