酰氧基丙基双封头 | 17947-89-6

• 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: 酰氧基丙基双封头
• 英文名称: 1,3-bis(3-acetoxypropyl)-1,1,3,3-tetramethyldisiloxane
• 英文别名: 1,3-bis-(3-acetoxy-propyl)-1,1,3,3-tetramethyl-disiloxane；1,3-Bis-(3-acetoxy-propyl)-1,1,3,3-tetramethyl-disiloxan；1.3-Bis--tetramethyl-disiloxan；3-[[3-acetyloxypropyl(dimethyl)silyl]oxy-dimethylsilyl]propyl acetate
• CAS: 17947-89-6
• 化学式: C₁₄H₃₀O₅Si₂
• 分子量: 334.56
• InChiKey: CQSLKIHMVJMGJQ-UHFFFAOYSA-N

物化性质

• 沸点：
  207 °C(Press: 39 Torr)
• 密度：
  0.9957 g/cm3(Temp: 0 °C)

计算性质

• 辛醇/水分配系数(LogP)：
  3.32
• 重原子数：
  21
• 可旋转键数：
  12
• 环数：
  0.0
• sp3杂化的碳原子比例：
  0.86
• 拓扑面积：
  61.8
• 氢给体数：
  0
• 氢受体数：
  5

反应信息

• 作为反应物：
  描述：

  酰氧基丙基双封头 在 potassium carbonate 作用下， 以 甲醇 为溶剂， 反应 2.0h， 生成 1,3-二(3-羟基丙基)-1,1,3,3-四甲基二硅氧烷
  参考文献：
  名称：

  Synthesis of polyesters containing disiloxane subunits: Structural characterization, kinetics, and an examination of the thermal tolerance of Novozym-435

  摘要：

  This paper reports the Novozym-435 mediated polymerization of disiloxane-containing polyester monomers under solvent-free conditions. The thermal tolerance of the immobilized enzyme was examined by conducting polymerization cycles over a temperature range of 35-150 degrees C. Increasing the temperature up to 100 degrees C afforded an increase in the apparent second order rate constant. Residual activity was measured using the production of octyl palmitate. The enzyme was shown to retain on average greater than 90% of its residual activity regardless of the polymerization temperature. This prompted a study of the long term thermal tolerance of the biocatalyst in which it was determined that over ten reaction cycles there was a significant decrease in the initial polymerization rate, but no change in the degree of monomer conversion after 24 h. The disiloxane containing polyesters were characterized using nuclear magnetic resonance spectroscopy and Fourier-transform infrared spectroscopy. Differential scanning calorimetry was used to determine the thermal properties of the disiloxane-containing polyesters. (C) 2012 Elsevier B.V. All rights reserved.

  DOI：

  10.1016/j.molcatb.2012.09.010
• 作为产物：
  描述：

  (3-溴丙基)(三甲基)硅烷 在 硫酸 、 乙酸酐 、 溶剂黄146 作用下， 生成 酰氧基丙基双封头
  参考文献：
  名称：

  Aliphatic Organo-functional Siloxanes. III. Synthesis and Physical Properties of Organopolysiloxane Diesters¹

  摘要：

  DOI：

  10.1021/ja01614a037

文献信息

• Ir-catalyzed hydrosilylation reaction of allyl acetate with octakis(dimethylsiloxy)octasilsesquioxane and related hydrosilanes
  作者：Masayasu Igarashi、Tomohiro Matsumoto、Toshiaki Kobayashi、Kazuhiko Sato、Wataru Ando、Shigeru Shimada、Masanao Hara、Hiroshi Uchida

  DOI：10.1016/j.jorganchem.2013.11.035

  日期：2014.2

  Hydrosilylation reaction of allyl acetate (AA) with octakis(dimethylsiloxy)octasilsesquioxane [(HSiMe2O)8(SiO1.5)8] was efficiently catalyzed by chloro(1,5-cyclooctadiene)iridium(I) dimer [Ir(μ-Cl)(COD)]2. The effects of the catalyst amounts and the reaction conditions on the conversion and the product selectivity were investigated. [Ir(μ-Cl)(COD)]2 catalyst was also applied to the hydrosilylation

  乙酸烯丙酯（AA）用的氢化硅烷化反应octakis（二甲基甲）八倍半硅氧烷[（HSiMe 2 O）8（SIO 1.5）8 ]被氯（1,5-环辛二烯）被有效催化的铱（I）二聚体物[Ir（μ -Cl ）（COD）] 2。研究了催化剂用量和反应条件对转化率和产物选择性的影响。[Ir（μ- Cl）（COD）] 2催化剂也被用于AA与其他氢硅烷的硅烷化反应，例如五甲基二硅氧烷，1,1,3,3-四甲基二硅氧烷，八氢硅倍半硅氧烷，三乙氧基硅烷和三（三甲基硅氧基）硅烷比较它们的结构-反应关系。
• The Addition of Silicon Hydrides to Olefinic Double Bonds. Part II. The Use of Group VIII Metal Catalysts
  作者：John L. Speier、James A. Webster、Garrett H. Barnes

  DOI：10.1021/ja01561a054

  日期：1957.2
• Organosilicon esters
  申请人：DOW CORNING

  公开号：US02770633A1

  公开（公告）日：1956-11-13