10-isopentyl-2-(8-isopentyl-4-(4-isopentyl-7-methyloctyl)-11-methyldodecyl)-6-(4-isopentyl-7-methyloctyl)-13-methyltetradecanal | 1162656-46-3

• 分子结构分类: 有机化合物 - 有机氧化合物
• 英文名称: 10-isopentyl-2-(8-isopentyl-4-(4-isopentyl-7-methyloctyl)-11-methyldodecyl)-6-(4-isopentyl-7-methyloctyl)-13-methyltetradecanal
• CAS: 1162656-46-3
• 化学式: C₆₆H₁₃₂O
• 分子量: 941.773
• InChiKey: FISYVSVFXLERME-UHFFFAOYSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  23.01
• 重原子数：
  67.0
• 可旋转键数：
  49.0
• 环数：
  0.0
• sp3杂化的碳原子比例：
  0.98
• 拓扑面积：
  17.07
• 氢给体数：
  0.0
• 氢受体数：
  1.0

反应信息

• 作为反应物：
  描述：

  10-isopentyl-2-(8-isopentyl-4-(4-isopentyl-7-methyloctyl)-11-methyldodecyl)-6-(4-isopentyl-7-methyloctyl)-13-methyltetradecanal 在 正丁基锂 、 potassium carbonate 、 三苯基膦 作用下， 以 四氢呋喃 、 正己烷 、 二氯甲烷 为溶剂， 反应 3.25h， 生成
  参考文献：
  名称：

  Synthesis and Self Assembling Properties of Rod-Like, 2-Ureido-4-pyrimidinone-Based Main Chain Supramolecular Dendronized Polymers

  摘要：

  A series of G1-G3 supramolecular dendronized polymers 6 bearing dimeric 2-ureido-4-pyrimidinone (UPy) units on the main chain and aliphatic hydrocarbon dendrons as side chain appendages was prepared. Because of the high crystallinity and poor solubility of such rigid rod polymers, only the 03 dendron could confer the resulting polymer 6 (n = 3) with enough solubility to enable its characterization and property studies. It was found that the nature of the dendrons play an important role on the UP.,, binding strength, solubility and self-assembly properties. The reversible nature of the polymerization process was demonstrated in different solvent systems by viscosity studies. A double logarithmic plot of the specific viscosity against concentration revealed a deflection point at 26 mM in CHCl3 at 26 and 40 degrees C. Below this critical concentration a straight line with a slope of 1.5 was obtained, while a slope of 4.0-4.2 was secured above this concentration. The data suggested that the associative interaction between the di-UPy monomer 5 (n = 3) increased nonlinearly with increasing monomer concentration. While the above investigations confirmed that these were main chain supramolecular dendronized polymers, UV-vis spectroscopic study revealed a large bathochromic shift (32 nm) with increasing polymer concentration in CHCl3. This finding was consistent with the formation of J-type aggregates via stair-case stacking between interchain UPy rings. SEM morphological study also confirmed that the resulting polymers appeared as fibrous superbundles with a very high aspect ratio. A model was purposed to rationalize how such bundles could be assembled from the di-UPy dendritic macromonomer 5 via intrachain hydrogen bonding and interchain stacking interactions.

  DOI：

  10.1021/ma101647j

文献信息

• Structural Effects on the Catalytic, Emulsifying, and Recycling Properties of Chiral Amphiphilic Dendritic Organocatalysts
  作者：Chui-Man Lo、Hak-Fun Chow

  DOI：10.1021/jo9006128

  日期：2009.8.7

  was also found that higher product yields and enantioselectivities were obtained in the aldol reactions when the aromatic aldehyde contains an electron-withdrawing substituent. The catalysts could be recycled and reused five times without significant drop in product yields and enantioselectivities. In addition, cross product contamination was not found when the recovered G3 catalyst was subsequently

  制备了三个系列的手性两亲性G1-G3树状有机催化剂，它们包含旋光性脯氨酸衍生的核和一个或两个非极性烃类树突。这些树状有机催化剂被用于水包油乳液的不对称醛醇和硝基-迈克尔加成反应中，以揭示树突尺寸和支化度对催化性能的影响。引入较大的疏水树突具有以下优点：促进水中乳液的形成，提高反应对映选择性，降低催化剂负载量（至1mol％），并促进反应后催化剂的回收。通常，较大的树枝状分子由于其增加的位阻作用而趋于降低催化剂的反应性。但是，在某些G1和G2树突状有机催化剂中发现了一些惊人的发现，其中，树枝状分子的空间体积和分支的增加导致更好的催化剂反应性。还发现当芳族醛包含吸电子取代基时，在醛醇缩合反应中获得更高的产物产率和对映选择性。催化剂可以循环使用五次，而产物收率和对映选择性没有明显下降。另外，当回收的G3催化剂随后用于涉及不同底物的另一反应中时，未发现交叉产物污染。还发现当芳族醛包含吸电子取代基时，