2,5-Bis-bromomethyl-benzoic acid 2-(2-{5-[2-(2-methoxy-ethoxy)-ethoxy]-naphthalen-1-yloxy}-ethoxy)-ethyl ester | 189026-87-7

• 分子结构分类: 有机化合物 - 苯类化合物 - 萘
• 英文名称: 2,5-Bis-bromomethyl-benzoic acid 2-(2-{5-[2-(2-methoxy-ethoxy)-ethoxy]-naphthalen-1-yloxy}-ethoxy)-ethyl ester
• CAS: 189026-87-7
• 化学式: C₂₈H₃₂Br₂O₇
• 分子量: 640.366
• InChiKey: AREZYDWGUMCTEM-UHFFFAOYSA-N

物化性质

• 沸点：
  699.0±55.0 °C(Predicted)
• 密度：
  1.431±0.06 g/cm3(Predicted)

计算性质

• 辛醇/水分配系数(LogP)：
  5.92
• 重原子数：
  37.0
• 可旋转键数：
  17.0
• 环数：
  3.0
• sp3杂化的碳原子比例：
  0.39
• 拓扑面积：
  72.45
• 氢给体数：
  0.0
• 氢受体数：
  7.0

反应信息

• 作为反应物：
  描述：

  2,5-Bis-bromomethyl-benzoic acid 2-(2-{5-[2-(2-methoxy-ethoxy)-ethoxy]-naphthalen-1-yloxy}-ethoxy)-ethyl ester 、 1,1'-[9,10-anthrylbis(methylene)]bis-4,4'-bipyridinium bis(hexafluorophosphate) 以 N,N-二甲基甲酰胺 为溶剂， 反应 72.0h， 生成
  参考文献：
  名称：

  Simple Mechanical Molecular and Supramolecular Machines: Photochemical and Electrochemical Control of Switching Processes

  摘要：

  AbstractPhotochemical control of a self‐assembled supramolecular 1:1 pseudorotaxane (formed between a tetracationic cyclophane, namely the tetrachloride salt of cyclobis(paraquat‐p‐phenylene), and 1,5‐bis[2‐(2‐(2‐hydroxy)ethoxy)ethoxy]naphthalene) has been achieved in aqueous solution. The photochemical one‐electron reduction of the cyclophane to the radical trication weakens the noncovalent bonding interactions between the cyclophane and the naphthalene guest—π‐π interactions between the π‐electron‐rich and π‐electron‐poor aromatic systems, and hydrogen‐bonding interactions between the acidic α‐bipyridinium hydrogen atoms of the cyclophane and the polyether oxygen atoms of the naphthalene derivative—sufficiently to allow the guest to dethread from the cavity; the process can be monitored by the appearance of naphthalene fluorescence. The radical tricationic cyclophane can be oxidized back to the tetracation in the dark by allowing oxygen gas into the system. This reversible process is marked by the disappearance of naphthalene fluorescence as the molecule is recomplexed by the tetracationic cyclophane. This supramolecular system can be chemically modified such that the π‐electron‐rich unit, either a naphthalene derivative or a hydroquinone ring, and the tetracationic cyclophane are covalently linked. We have demonstrated that the π‐electron‐rich residue in this system is totally “self‐complexed” by the cyclophane to which it is covalently attached. Additionally, the self‐complexation can be switched “off” and “on” by electrochemical two‐electron reductions and oxidations, respectively, of the tetracationic cyclophane component. Thus, we have achieved the construction of two switches at the nanoscale level, one driven by photons and the other by electrons.

  DOI：

  10.1002/chem.19970030123
• 作为产物：
  描述：

  2,5-双(溴甲基)苯甲酸 在 氯化亚砜 、 N,N-二甲基甲酰胺 作用下， 以 二氯甲烷 、 甲苯 为溶剂， 反应 6.0h， 生成 2,5-Bis-bromomethyl-benzoic acid 2-(2-{5-[2-(2-methoxy-ethoxy)-ethoxy]-naphthalen-1-yloxy}-ethoxy)-ethyl ester
  参考文献：
  名称：

  Simple Mechanical Molecular and Supramolecular Machines: Photochemical and Electrochemical Control of Switching Processes

  摘要：

  AbstractPhotochemical control of a self‐assembled supramolecular 1:1 pseudorotaxane (formed between a tetracationic cyclophane, namely the tetrachloride salt of cyclobis(paraquat‐p‐phenylene), and 1,5‐bis[2‐(2‐(2‐hydroxy)ethoxy)ethoxy]naphthalene) has been achieved in aqueous solution. The photochemical one‐electron reduction of the cyclophane to the radical trication weakens the noncovalent bonding interactions between the cyclophane and the naphthalene guest—π‐π interactions between the π‐electron‐rich and π‐electron‐poor aromatic systems, and hydrogen‐bonding interactions between the acidic α‐bipyridinium hydrogen atoms of the cyclophane and the polyether oxygen atoms of the naphthalene derivative—sufficiently to allow the guest to dethread from the cavity; the process can be monitored by the appearance of naphthalene fluorescence. The radical tricationic cyclophane can be oxidized back to the tetracation in the dark by allowing oxygen gas into the system. This reversible process is marked by the disappearance of naphthalene fluorescence as the molecule is recomplexed by the tetracationic cyclophane. This supramolecular system can be chemically modified such that the π‐electron‐rich unit, either a naphthalene derivative or a hydroquinone ring, and the tetracationic cyclophane are covalently linked. We have demonstrated that the π‐electron‐rich residue in this system is totally “self‐complexed” by the cyclophane to which it is covalently attached. Additionally, the self‐complexation can be switched “off” and “on” by electrochemical two‐electron reductions and oxidations, respectively, of the tetracationic cyclophane component. Thus, we have achieved the construction of two switches at the nanoscale level, one driven by photons and the other by electrons.

  DOI：

  10.1002/chem.19970030123