2,5-Dimethyl-4-(pyridin-2-ylmethylideneamino)phenol | 870860-10-9

• 分子结构分类: 有机化合物 - 苯类化合物 - 苯和取代衍生物
• 英文名称: 2,5-Dimethyl-4-(pyridin-2-ylmethylideneamino)phenol
• CAS: 870860-10-9
• 化学式: C₁₄H₁₄N₂O
• 分子量: 226.278
• InChiKey: BBVPLJQUPTVQKL-UHFFFAOYSA-N

物化性质

• 沸点：
  434.3±45.0 °C(Predicted)
• 密度：
  1.09±0.1 g/cm3(Predicted)

计算性质

• 辛醇/水分配系数(LogP)：
  2.9
• 重原子数：
  17
• 可旋转键数：
  2
• 环数：
  2.0
• sp3杂化的碳原子比例：
  0.14
• 拓扑面积：
  45.5
• 氢给体数：
  1
• 氢受体数：
  3

反应信息

• 作为反应物：
  描述：

  2,5-Dimethyl-4-(pyridin-2-ylmethylideneamino)phenol 、 溴甲苯 在 18-冠醚-6 、 potassium carbonate 作用下， 以 二氯甲烷 、 丙酮 为溶剂， 反应 72.0h， 生成
  参考文献：
  名称：

  Monometallic nickel(II) complexes containing N,N′-iminopyridine chelating ligands with dendritic substituents: The influence of dendrimer topology on the catalytic oligomerization and polymerization of ethylene

  摘要：

  Iminopyridine ligands of general formula Gn-PBE-ONN (Gn-PBE = Frechet-type dendritic wedges of generation G0 (1), G1 (2), G2 (3), and G3 (4); -ONN = -O-4-(2,5-Me2C6H2)-N=CH-2-py) have been prepared starting from H-ONN. Reaction of these bidentate ligands with [NiBr2(DME)] results in the nickel(II) complexes [NiBr2(Gn-PBE-ONN)] (5-8). The methylaluminoxane (MAO)-activated monometallic complexes have been studied in the transformation of ethylene into mixtures of polyethylene and oily oligomers, and their catalytic performance scrutinized as a function of dendritic size. A comparison with the behavior observed for related polymetallic dendrimers has enabled the dendritic features that affect various catalytic parameters to be determined. Thus, it has been possible to discern whether the dendritic effect detected in the catalysis should be ascribed to the metallic nuclearity rather than the bulkiness of the metallodendrimer. (C) 2013 Elsevier B. V. All rights reserved.

  DOI：

  10.1016/j.ica.2013.07.025

文献信息

• Polymetallic Carbosilane Dendrimers Containing <i>N,N</i>'‐Iminopyridine Chelating Ligands: Applications in Catalysis
  作者：Francisco Martínez‐Olid、José M. Benito、Juan C. Flores、Ernesto de Jesús

  DOI：10.1560/ijc.49.1.99

  日期：2009.5

  This overview covers the most relevant results obtained by our group in the last few years concerning the synthesis and catalytic applications of metal complexes anchored to the surface of carbosilane dendrimers functionalized with iminopyridine ligands. Nickel dibromide complexes activated with methylaluminoxane (MAO) have been studied for the polymerization of ethylene, whereas cat‐ionic palladium(ii) derivatives have been applied to the copolymerization of carbon monoxide and tert‐butylstyrene. In addition, palladium dendrimers have been tested in the Heck reaction between methyl acrylate and iodotoluene. Correlations between the catalyst activities or reaction products (product distributions, polymer molecular weights, etc.) and the dendrimer generation are discussed and tentative explanations for these correlations provided.

  摘要 本综述涵盖了我们研究小组在过去几年中取得的最相关的成果，这些成果涉及锚定在亚氨基吡啶配体功能化的碳硅烷树枝状聚合物表面的金属络合物的合成和催化应用。研究发现，用甲基铝氧烷（MAO）激活的二溴化镍络合物可用于乙烯的聚合，而阴离子钯（ii）衍生物则可用于一氧化碳和叔丁基苯乙烯的共聚。此外，还在丙烯酸甲酯和碘甲苯的赫克反应中测试了钯树枝状聚合物。讨论了催化剂活性或反应产物（产物分布、聚合物分子量等）与树枝状聚合物生成之间的相关性，并提供了这些相关性的初步解释。