1-Octan-2-yloxypropan-2-ol | 169209-56-7

• 分子结构分类: 有机化合物 - 有机氧化合物
• 英文名称: 1-Octan-2-yloxypropan-2-ol
• CAS: 169209-56-7
• 化学式: C₁₁H₂₄O₂
• 分子量: 188.31
• InChiKey: UJUHXMYIUQEYJQ-UHFFFAOYSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  3.1
• 重原子数：
  13
• 可旋转键数：
  8
• 环数：
  0.0
• sp3杂化的碳原子比例：
  1.0
• 拓扑面积：
  29.5
• 氢给体数：
  1
• 氢受体数：
  2

反应信息

• 作为产物：
  描述：

  1,2-丙二醇 、 辛烯 在 H-Beta zeolites (Si:Al=22) 作用下， 139.84 ℃ 、1.0 MPa 条件下， 反应 3.0h， 生成 1-Octan-2-yloxypropan-2-ol
  参考文献：
  名称：

  通过两种竞争性催化途径合成基于生物质的乙二醇辛基醚：端粒化和醚化

  摘要：

  人们对生物质增值的兴趣日益浓厚，引发了全球范围内寻找新的催化路线来转变交通燃料和有价值的化学物质中基于生物质的衍生物的探索。预期在大多数情况下，可以遵循一个以上的催化途径来合成所需的最终产物。一个这样的例子是由基于生物质的二醇合成辛基醚，其可以通过1，3-丁二烯的端粒化或长直链烯烃的直接醚化来进行。对于这两种方法，我们小组都开发了活性催化剂和选择性催化剂，并在无溶剂条件下研究了它们的活性和选择性。1,3-丁二烯的端粒化提供线性均相的Pd / TOMPP（TOMPP = Tris-（o-甲氧基苯基）膦）催化剂可高产率（最高80％）合成辛基醚。对于乙二醇与1-辛烯的直接醚化反应，H-Beta沸石是非常有前途的非均相催化剂，可生产支链辛基醚，收率高达80％。在这项工作中，详细说明了催化剂性能和乙二醇结构的影响，并讨论了两种催化途径的优缺点。

  DOI：

  10.1016/j.cattod.2010.05.021

文献信息

• Synthesis of long alkyl chain ethers through direct etherification of biomass-based alcohols with 1-octene over heterogeneous acid catalysts
  作者：Agnieszka M. Ruppert、Andrei N. Parvulescu、Maria Arias、Peter J.C. Hausoul、Pieter C.A. Bruijnincx、Robertus J.M. Klein Gebbink、Bert M. Weckhuysen

  DOI：10.1016/j.jcat.2009.09.023

  日期：2009.12.10

  Heterogeneous etherification of various biomass-based alcohols with 1-octene was investigated as a direct route for the synthesis of long alkyl chain ethers. Several acid catalyst materials including Amberlyst resins and various zeolites were screened as etherification catalysts in a solventless system. It was found that H-Beta zeolites are the most selective catalysts for the etherification of biomass-based

  研究了各种基于生物质的醇与1-辛烯的异质醚化，这是合成长烷基链醚的直接途径。在无溶剂体系中，筛选了几种酸性催化剂材料（包括Amberlyst树脂和各种沸石）作为醚化催化剂。发现H-β沸石是用于将基于生物质的醇与1-辛烯醚化为相应的单醚的最具选择性的催化剂。用H-β整齐甘油的转化率为约15-20％，并且增加至54-89％为二醇如乙二醇和1,2-丙二醇，具有高的选择性，以单声道-和二-辛基醚的含量为85-97％。其他直链烯烃如1-十二碳烯和1-十六碳烯也成功地用于二醇的直接醚化中。粗甘油也被醚化，尽管转化率低。研究了几种反应参数对H-β醚化活性的影响以及催化剂的回收和再利用。
• Chemical Imaging of Catalyst Deactivation during the Conversion of Renewables at the Single Particle Level: Etherification of Biomass-Based Polyols with Alkenes over H-Beta Zeolites
  作者：Andrei N. Parvulescu、Davide Mores、Eli Stavitski、Cristian M. Teodorescu、Pieter C. A. Bruijnincx、Robertus J. M. Klein Gebbink、Bert M. Weckhuysen

  DOI：10.1021/ja102566b

  日期：2010.8.4

  The etherification of biomass-based alcohols with various linear alpha-olefins under solvent-free conditions was followed in a space- and time-resolved manner on 9 mu m large H-Beta zeolite crystals by confocal fluorescence microscopy. This allowed us to visualize the interaction with the substrate and distribution of the coke products into the catalyst at the level of an individual zeolite crystal during the etherification process. The spectroscopic information obtained on the micrometer-scale zeolite was in line with the results obtained with bulk characterization techniques and further confirmed by the catalytic results obtained both for micrometer-scale and nanoscale zeolites. This allowed us to explain the influence of the substrate type (glycerol, glycols, and alkenes) and zeolite properties (Si/Al ratio and particle size) on the etherification activity. The etherification of the biomass-based alcohols takes place mainly on the external surface of the zeolite particles. The gradual blockage of the external surface of the zeolite results in a partial or total loss of etherification activity. The deactivation could be attributed to olefin oligomerization. The high conversions obtained in the etherification of 1,2-propylene glycol with long linear alkenes (up to 80%) and the pronounced deactivation of the zeolite observed in the etherification of glycerol with long linear alkenes (max. 20% conversion) were explained by the spectroscopic measurements and is due to differences in the adsorption, i.e., in the center of the zeolite particle for glycerol and on the external surface in the case of glycols.