Hexadentate Poly‐Lewis Acids Based on 1,3,5‐Trisilacyclohexane
作者:Fabian Schäfer、Beate Neumann、Hans‐Georg Stammler、Norbert W. Mitzel
DOI:10.1002/ejic.202100437
日期:2021.8.13
donor-free trisilacyclohexane. Flexible hexadentate PLA were prepared by hydroboration or hydrosilylation of hexavinyltrisilacyclohexane, resulting in PLA with six 9-BBN, SiCl3, SiCl2Me or SiClMe2 groups. The Lewis-acidity of the last one was increased by conversion with silver triflate, resulting in a PLA with six highly acidic silyl triflate groups attached to the 1,3,5-trisilacyclohexane unit as TfOSiMe2-C2H4-
我们报告了基于 1,3,5-三硅杂环己烷骨架的六齿聚路易斯酸 (PLA) 的制备,该骨架带有连接到每个硅原子的两个炔基。通过锡硼交换反应制备了带有六个路易斯酸性儿茶酚硼基取代基的刚性六齿 PLA。通过 X 射线衍射确定其结构是第一个路易斯酸官能化的无供体的三硅杂环己烷。通过六乙烯基三硅杂环己烷的硼氢化或氢化硅烷化制备柔性六齿 PLA,得到具有 6 个 9-BBN、SiCl 3、SiCl 2 Me 或 SiClMe 2 的PLA组。最后一种的路易斯酸度通过与三氟甲磺酸银的转化而增加,导致具有六个高酸性三氟甲磺酸甲硅烷基团作为 TfOSiMe 2 -C 2 H 4 - 基团连接到 1,3,5-三硅杂环己烷单元的 PLA 。上述PLA的主客体实验证明了柔性代表在形成1:6加合物(主体:客体)下络合基于路易斯的中性客体分子的适用性。
PRODUCTION METHOD FOR LINEAR AND CYCLIC TRISILAALKANE
申请人:Jung Il Nam
公开号:US20110077420A1
公开(公告)日:2011-03-31
The present invention relates to a preparation method for a linear or cyclic trisilaalkane which is a substance useful in the preparation of polycarbosilane and silicon carbide precursors. Linear or cyclic trisilaalkane and organic trichlorosilane derivatives can be synthesized simultaneously and in high yield by reacting bis(chlorosily)methane having a Si—H bond, either alone or together with an organic chloride, using a quaternary organic phosphonium salt compound as a catalyst. Further, since the catalyst can be recovered after use, the present invention is very economical and is thus effective for mass-producing precursors for organic/inorganic hybrid substances.
Phosphine-Catalyzed Si−C Coupling of Bissilylmethanes: Preparation of Cyclic (Cl<sub>2</sub>SiCH<sub>2</sub>)<sub>2</sub> and Linear Cl<sub>2</sub>Si(CH<sub>2</sub>SiCl<sub>3</sub>)<sub>2</sub> via Silylene and Silene Intermediates
作者:Soon Hyun Hong、Sang Il Hyun、Il Nam Jung、Won-Sik Han、Min-Hye Kim、Hoseop Yun、Suk-Woo Nam、Sang Ook Kang
DOI:10.1021/om901071k
日期:2010.2.8
Cyclic and linear carbosilanes, (Cl2SiCH2)2 (2) and Cl2Si(CH2SiCl3)2 (3), were produced from phosphine-catalized Si−C coupling reactions of bissilylmethanes, HCl2SiCH2SiX1X2Cl (X1, X2 = Cl (1), X1 = H, X2 = Cl (7), and X1 = Me, X2 = Cl (8)). The formation of compounds 2 and 3 suggested competing reaction pathways, involving dichlorosilene [CH2═SiCl2] and dichlorosilylene [:SiCl2] intermediates. Each intermediate