1,1,1,3,3,5,5,5-octaethoxy-trisiloxane | 4521-94-2

• 分子结构分类: 有机化合物 - 有机金属化合物 - 有机类金属化合物
• 英文名称: 1,1,1,3,3,5,5,5-octaethoxy-trisiloxane
• 英文别名: octaethoxytrisiloxane；octaethoxydisiloxane；trisilicic acid octaethyl ester；octaethoxy-trisiloxane；Trikieselsaeure-octaaethylester；Octaaethyl-trisilicat；Trisiloxane, octaethoxy-；diethyl bis(triethoxysilyl) silicate
• CAS: 4521-94-2
• 化学式: C₁₆H₄₀O₁₀Si₃
• 分子量: 476.744
• InChiKey: SCCMALBMEASKCM-UHFFFAOYSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  2.62
• 重原子数：
  29
• 可旋转键数：
  20
• 环数：
  0.0
• sp3杂化的碳原子比例：
  1.0
• 拓扑面积：
  92.3
• 氢给体数：
  0
• 氢受体数：
  10

安全信息

• 海关编码：
  2920909090

反应信息

• 作为反应物：
  描述：

  1,1,1,3,3,5,5,5-octaethoxy-trisiloxane 生成 (Ethoxy-hydroxy-triethoxysilyloxysilyl) triethyl silicate
  参考文献：
  名称：

  LIN, CHIA-CHENG;BASIL, JOHN D., BETTER CERAM. THROUGH CHEM. II, PITTSBURGH (PA),(1986) C. 585-590

  摘要：

  DOI：
• 作为产物：
  描述：

  硅酸四乙酯 在 乙酰碘 作用下， 以60%的产率得到1,1,1,3,3,5,5,5-octaethoxy-trisiloxane
  参考文献：
  名称：

  Acyl iodides in organic synthesis: IX. Cleavage of the Si-O-C and Si-O-Si moieties

  摘要：

  Reactions of acyl iodides RCOI (R = Me, Ph) with organosilicon compounds involve cleavage of the Si-O-C and Si-O-Si fragments. Acetyl iodide reacts with alkyl(alkoxy)silanes with evolution of heat, and cleavage of the Si-O bond results in the formation of oligo-or polysiloxanes, alkyl iodides, and alkyl acetates. 1,3-Diacetoxytetramethyldisiloxane is formed in the reaction of acetyl iodide with dimethoxy(dimethyl)silane. Acyl iodides readily react with 1-ethoxysilatrane to give 1-acyloxysilatranes as a result of cleavage of the C-O bond. The reaction of acetyl iodide with hexaethyldisiloxane yields triethylsilyl acetate and triethyliodosilane, while in the reaction with octamethyltrisiloxane iodo(trimethyl)silane and dimethyl(trimethylsiloxy)silyl acetate are obtained.

  DOI：

  10.1134/s1070428007040021
• 作为试剂：
  描述：

  三甲基硅乙酸酯 在 盐酸 、 1,1,1,3,3,5,5,5-octaethoxy-trisiloxane 作用下， 生成 Octakis-trimethylsiloxy-trisiloxan
  参考文献：
  名称：

  Heterofunctional cocondensation of acetoxymethyl-(phenyl)silanes with organosilicon compounds containing silicon-attached ethoxy groups

  摘要：

  DOI：

  10.1007/bf00907221

文献信息

• Triethoxysilane, Tetraethoxysilane and Hexaethoxydisiloxane – Three Complementary Reagents for the Synthesis of Hydrogen-Rich Silylarenes
  作者：Oliver Minge、Stefan Nogai、Hubert Schmidbaur

  DOI：10.1515/znb-2004-0206

  日期：2004.2.1

  Triethoxysilane HSi(OEt)₃, tetraethoxysilane Si(OEt)₄ and hexaethoxydisiloxane Si₂O(OEt)₆ have been probed as reagents for the synthesis of hydrogen-rich silyl-arenes Ar(SiH₃)_n. A large set of new silyl-arenes, varying in their substitution patterns and grades, have been prepared. The results establish the two new silylating agents HSi(OEt)₃ and Si₂O(OEt)₆ as particularly useful alternatives to Si(OEt)₄. The products, which include trihydrosilyl-substituted methylbenzenes, naphthalenes and ferrocenes, have been characterized by NMR and IR spectroscopy, mass spectrometry and single crystal X-ray diffraction.

  三乙氧基硅烷HSi(OEt)₃，四乙氧基硅烷Si(OEt)₄和六乙氧基二硅氧烷Si₂O(OEt)₆已被探讨作为合成富氢硅基芳烃Ar(SiH₃)ₙ的试剂。已制备了一系列新的硅基芳烃，其取代模式和级别各不相同。结果表明，两种新的硅化试剂HSi(OEt)₃和Si₂O(OEt)₆特别适用于Si(OEt)₄的替代品。这些产物包括三氢硅基取代的甲基苯、萘和二茂铁等化合物，已通过核磁共振和红外光谱、质谱和单晶X射线衍射进行了表征。
• Lower Members of Diethoxycyclopolysiloxanes from Diethoxydichlorosilane
  作者：Rokuro Okawara、Saburo Hotta、Toshiro Shimura

  DOI：10.1246/bcsj.28.541

  日期：1955.8

  (1) Diethoxydichlorosilane did not easily react with sodium bicarbonate.(2) Diethoxycyclopolysiloxanes beginning with cyclotrimer could be obtained from the hydrolysis of diethoxydichlorosilane by using pyridine as an acid acceptor. (3) The lower members of diethoxycyclopolysiloxanes having three to five silicon atoms have been characterized.(4) The cyclotrimer was found to be formed only in the limited conditions of hydrolysis and it was decomsosed spontaneously in a sealed soft glass ampulla.

  (1) 二乙氧基二氯硅烷与碳酸氢钠不易反应。 (2) 以吡啶作为酸接受体，可以通过水解二乙氧基二氯硅烷获得以环聚三聚体为起始物的二乙氧基环聚硅氧烷。 (3) 已对由三个到五个硅原子组成的低成员二乙氧基环聚硅氧烷进行了表征。 (4) 发现在有限的水解条件下仅形成环三聚体，并且在密封的软玻璃安瓿中自发分解。
• A New Route to Silicon Alkoxides from Silica
  作者：Tim Kemmitt、William Henderson

  DOI：10.1071/c98060

  日期：——

  A novel route to tetraethoxysilane and other silicon alkoxides is described, from amorphous silica (SiO2.nH2O) as the raw material. The reaction of amorphous silica with triethanolamine is enhanced by using an alkali metal hydroxide catalyst, to form a range of triethanolamine-substituted silatrane species. These can undergo alkoxide exchange in acidic alcohols to form alkoxysilatranes, tetraalkoxysilanes, hexaalkoxydisiloxanes and higher siloxanes. Reaction of triethanolamine-substituted silatranes with acetic anhydride produces acetoxysilatrane. Products were identified by multinuclear (1H, 13C and 29Si) magnetic resonance spectroscopy, electrospray mass spectrometry or high-resolution gas chromatography electron impact mass spectrometry.

  描述了一种获得四乙氧基硅烷和其他硅烷氧基化合物的新方法、 从无定形二氧化硅 (SiO2.nH2O) 为原料。无定形二氧化硅与三乙醇胺的反应 通过使用碱金属氢氧化物催化剂，增强了无定形二氧化硅与三乙醇胺的反应，形成一系列 三乙醇胺取代的硅烷。这些物质可在酸性醇中进行 交换，形成烷氧基硅烷、四烷氧基硅烷、 六烷氧基二硅氧烷和高级硅氧烷。反应 三乙醇胺取代的硅烷与乙酸酐反应生成 乙酰氧基硅烷。通过多核 (1H、13C 和 29Si）磁共振光谱法、电喷雾质谱法或高分辨 质谱法或高分辨率气相色谱电子碰撞质谱法鉴定。 质谱法进行鉴定。
• Transesterification Reaction of Tetraethoxysilane and Butyl Alcohols
  作者：Isao Hasegawa、Sumio Sakka

  DOI：10.1246/bcsj.61.4087

  日期：1988.11

  transesterification depended on the ratio of numbers of alkyl groups in tetraalkoxysilane and alcohol used. The time required for equilibrium in the distribution of alkoxysilane species in the solution was different with the variety of butyl alcohols used, suggesting the presence of steric effect of butyl alcohols on this reaction.

  在丁醇的存在下，用 Amberlyst 15 阳离子交换树脂处理四乙氧基硅烷。在处理四乙氧基硅烷和1-丁醇的混合物时，发生酯交换，其中丁氧基被四乙氧基硅烷中的乙氧基取代。酯交换的程度取决于混合物中四乙氧基硅烷与1-丁醇的摩尔比。将四乙氧基硅烷-1-丁醇溶液中烷氧基硅烷物质的分布与四丁氧基硅烷-乙醇溶液进行比较，发现酯交换的程度取决于所用四烷氧基硅烷和醇中烷基数量的比例。溶液中烷氧基硅烷分布达到平衡所需的时间因所用丁醇的种类而异，
• Gmelin Handbuch der Anorganischen Chemie, Gmelin Handbook: Si: MVol.C, 143, page 392 - 393
  作者：

  DOI：——

  日期：——