3,7-dimethyl-2,6-octadienal diisopropanol acetal | 128434-72-0

• 分子结构分类: 有机化合物 - 脂质和类脂质分子 - 异戊烯醇脂质
• 英文名称: 3,7-dimethyl-2,6-octadienal diisopropanol acetal
• CAS: 128434-72-0
• 化学式: C₁₆H₃₀O₂
• 分子量: 254.413
• InChiKey: JRHBVRWJERWJJX-UHFFFAOYSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  4.86
• 重原子数：
  18.0
• 可旋转键数：
  8.0
• 环数：
  0.0
• sp3杂化的碳原子比例：
  0.75
• 拓扑面积：
  18.46
• 氢给体数：
  0.0
• 氢受体数：
  2.0

反应信息

• 作为产物：
  描述：

  异丙醇 、 柠檬醛 在 palladium 10% on activated carbon 、 potassium carbonate 作用下， 反应 0.5h， 生成 香茅醛 、 3,7-dimethyl-2,6-octadienal diisopropanol acetal
  参考文献：
  名称：

  Reduction of citral in water under typical transfer hydrogenation conditions—Reaction mechanisms with evolution of and hydrogenation by molecular hydrogen

  摘要：

  The reduction of an alpha,beta-unsaturated aldehyde, citral, was investigated over a 10 wt% Pd catalyst under transfer hydrogenation (TH) conditions in a closed system with microwave assistance. Surprisingly, it was found that hydrogen was produced quite fast under the microwave irradiation during the reaction, and the reduction of citral was proved to go mainly through consecutive pathways of hydrogen production - hydrogenation rather than those commonly considered for TH reactions. Similar reaction pathways were also observed with a homogeneous catalyst of [RuCl2(C6H6)](2) and other typical hydrogen donors like formate salts and isopropanol, which are usually used in the typical transfer hydrogenations. (c) 2012 Elsevier B.V. All rights reserved.

  DOI：

  10.1016/j.molcata.2012.10.010

文献信息

• Citral hydrogenation over Rh and Pt catalysts supported on TiO2: Influence of the preparation and activation protocols of the catalysts
  作者：Tchirioua Ekou、Lynda Ekou、Aurélie Vicente、Gwendoline Lafaye、Stéphane Pronier、Catherine Especel、Patrice Marécot

  DOI：10.1016/j.molcata.2011.01.020

  日期：2011.3

  During citral hydrogenation, the products distribution obtained on Rh/TiO2 and Pt/TiO2 catalysts depends on their preparation and activation protocols: (i) the unsaturated alcohols (the intended products) are formed in higher quantity on samples reduced at 500 degrees C and more notably with Pt/TiO2 catalyst; (ii) samples prepared by impregnation of the metallic precursor salt in HCl medium and activated at 300 degrees C are the only ones to lead to the formation of isopulegol as by-product. On the catalysts activated at 500 degrees C, these results can be explained by the presence of the SMSI effect beneficial to hydrogenate selectively the C=O bond of citral towards unsaturated alcohols. (C) 2011 Elsevier B.V. All rights reserved.