四(2-乙基丁基)硅酸酯 | 78-13-7

• 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
• 中文名称: 四(2-乙基丁基)硅酸酯
• 英文名称: Tetrakis(2-aethylbutoxy)silan
• 英文别名: tetrakis(2-ethylbutoxy)silane；tetrakis(2-ethylbutyl) silicate
• CAS: 78-13-7
• 化学式: C₂₄H₅₂O₄Si
• 分子量: 432.76
• InChiKey: SWQWONXMUXCEDF-UHFFFAOYSA-N

物化性质

• 熔点：
  -50°C
• 沸点：
  166 °C
• 密度：
  0.892
• 闪点：
  116°C

计算性质

• 辛醇/水分配系数(LogP)：
  8.34
• 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：
  36.9
• 氢给体数：
  0
• 氢受体数：
  4

反应信息

• 作为反应物：
  描述：

  四(2-乙基丁基)硅酸酯 、 乙炔 在 nickel dichloride 亚膦酸 作用下， 以 乙腈 为溶剂， 反应 4.0h， 以31%的产率得到2-ethyl-butyl vinylphosphinate
  参考文献：
  名称：

  NiCl₂-Catalyzed Hydrophosphinylation

  摘要：

  A new nickel-based catalytic system has been developed for phosphorus-carbon bond formation. The addition of alkyl phosphinates to alkynes is catalyzed by nickel chloride in the absence of added ligand. The reaction generally proceeds in high yields, even with internal alkynes, which were poor substrates in our previously reported palladium-catalyzed hydrophosphinylation of alkyl phosphinates. The method is useful for the preparation of H-phosphinate esters and their derivatives. The one-pot synthesis of various important organophosphorus compounds is also demonstrated. The reaction can be conducted with microwave heating.

  DOI：

  10.1021/jo050096l
• 作为产物：
  描述：

  2-乙基-1-丁醇 在 吡啶 、 四氯化硅 作用下， 以95%的产率得到四(2-乙基丁基)硅酸酯
  参考文献：
  名称：

  Abiotic and Biological Transformation of Tetraalkoxysilanes and Trichloroethene/cis-1,2-Dichloroethene Cometabolism Driven by Tetrabutoxysilane-Degrading Microorganisms

  摘要：

  Attenuation of silicon-based organic compounds (tetraalkoxysilanes) by abiotic hydrolysis and biological mineralization was investigated. At Lawrence Livermore National Laboratory site 300, tetraalkoxysilanes are present along with trichloroethene (TCE) as subsurface contaminants. Under abiotic conditions, the alkoxysilanes such as tetrabutoxysilane (TBOS) and tetrakis(2-ethylbutoxy)silane (TKEBS) hydrolyze to l-butanol and 2-ethylbutanol, respectively, and silicic acid. The rates of hydrolysis of TBOS and TKEBS were determined to evaluate the significance of the hydrolysis reaction in the attenuation process, and typical rates at pH 7, 30 degrees C, and 28 mu mol/L initial concentration were 0.32 and 0.048 mu mol/L/day, respectively. The TBOS hydrolysis reaction was observed to be acid- and base-catalyzed and independent of temperature from 15 to 30 degrees C. All hydrolysis experiments were conducted at concentrations above the solubility limit of TBOS and TKEBS, and the rate of hydrolysis increased with concentration of TBOS or TKEBS. An aerobic microbial culture from the local wastewater treatment plant that could grow and mineralize the alkoxysilanes was enriched. The enriched culture rapidly hydrolyzed TBOS and TKEBS and grew on the hydrolysis products. The microorganisms grown on TBOS cometabolized TCE and cis-1,2-dichloroethene (c-DCE). TCE and c-DCE degradation was inhibited by acetylene, indicating that a monooxygenase was involved in the cometabolism process. Acetylene did not inhibit the hydrolysis of TBOS or the utilization of l-butanol, indicating that the above monooxygenase enzyme was not involved in the degradation of TBOS.

  DOI：

  10.1021/es981021k

文献信息

• Gmelin Handbuch der Anorganischen Chemie, Gmelin Handbook: Si: MVol.C, 125, page 348 - 350
  作者：

  DOI：——

  日期：——
• Higher secondary-alkyl orthosilicates
  申请人：CALIFORNIA RESEARCH CORP

  公开号：US02643263A1

  公开（公告）日：1953-06-23
• US264263
  申请人：——

  公开号：——

  公开（公告）日：——
• ALAGAR, M.;KRISHNASAMY, V., HUNG. J. IND. CHEM., 15,(1987) N 4, 453-468
  作者：ALAGAR, M.、KRISHNASAMY, V.

  DOI：——

  日期：——