1,4-bis-benzyloxymethyl-benzene | 16721-03-2

• 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: 1,4-bis-benzyloxymethyl-benzene
• 英文别名: 1,4-Bis-benzyloxymethyl-benzol；α.α'-Dibenzyloxy-p-xylol；1,1'-[1,4-Phenylenebis(methyleneoxymethylene)]dibenzene；1,4-bis(phenylmethoxymethyl)benzene
• CAS: 16721-03-2
• 化学式: C₂₂H₂₂O₂
• 分子量: 318.415
• InChiKey: PKQYQVKEBQZUGQ-UHFFFAOYSA-N

物化性质

• 熔点：
  66-67 °C
• 沸点：
  433.2±35.0 °C(Predicted)
• 密度：
  1.101±0.06 g/cm3(Predicted)

计算性质

• 辛醇/水分配系数(LogP)：
  4.5
• 重原子数：
  24
• 可旋转键数：
  8
• 环数：
  3.0
• sp3杂化的碳原子比例：
  0.18
• 拓扑面积：
  18.5
• 氢给体数：
  0
• 氢受体数：
  2

反应信息

• 作为反应物：
  描述：

  1,4-bis-benzyloxymethyl-benzene 、 频那醇硼烷 在 [RhCl2(p-cymene)]2 作用下， 以 neat (no solvent) 为溶剂， 135.0 ℃ 、150.0 kPa 条件下， 反应 24.0h， 以69%的产率得到1,4-bis(((4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)oxy)methyl)benzene
  参考文献：
  名称：

  钌催化的醚选择性氢硼水解

  摘要：

  HBpin的钌催化反应与取代有机醚导致的C-O键的激活，导致通过加氢形成烷烃和硼酸酯的boronolysis。使用钌预催化剂[Ru（对-cymene）Cl] 2 Cl 2（1），反应在135°C和大气压（135°C时约1.5 bar）的纯净条件下进行。不对称的二苄基醚在电子相对较差的C-O键上进行选择性氢硼水解。在芳基苄基或烷基苄基醚中，C O键裂解选择性地发生在C Bn -OR键上（Bn =苄基）；在烷基甲基醚中，C Me的选择性解构-OR键导致形成烷基硼酸酯和甲烷。环醚也适合催化氢硼水解。机制研究表明在单hydridobridged双核钌络合物原位形成立即[{（η 6 - p -cymene）的RuCl} 2（μ-H-μ-Cl）的（2），它是高活性的用于水力boronolysis醚。随着时间的流逝，双核物质分解产生钌纳米颗粒，该钌纳米颗粒也对该转化具有活性。使用这种催化系统，氢硼分解

  DOI：

  10.1021/acscatal.0c04269
• 作为产物：
  描述：

  对苯二甲醇 、 溴甲苯 在 sodium hydride 作用下， 以 二甲基亚砜 为溶剂， 反应 1.0h， 以50%的产率得到1,4-bis-benzyloxymethyl-benzene
  参考文献：
  名称：

  Binding of Tetramethylammonium to Polyether Side-Chained Aromatic Hosts. Evaluation of the Binding Contribution from Ether Oxygen Donors

  摘要：

  A set of macrocyclic and open-chain aromatic ligands endowed with polyether side chains has been prepared to assess the contribution of ether oxygen donors to the binding of tetramethylammonium (TMA), a cation believed incapable of interacting with oxygen donors. The open-chain hosts consisted of an aromatic binding site and side chains possessing a variable number of ether oxygen donors; the macrocyclic ligands were based on the structure of a previously investigated host, the dimeric cyclophane 1,4-xylylene-1,4-phenylene diacetate (DXPDA), implemented with polyether-type side chains in the backbone. Association to tetramethylammonium picrate (TMAP) was measured in CDCl3 at T = 296 K by H-1 NMR titrations. Results confirm that the main contribution to the binding of TMA comes from the cation-pi interaction established with the aromatic binding sites, but they unequivocally show that polyether chains participate with cooperative contributions, although of markedly smaller entity. Water is also bound, but the two guests interact with aromatic rings and oxygen donors in an essentially noncompetitive way. An improved procedure for the preparation of cyclophanic tetraester derivatives has been developed that conveniently recycles the oligomeric ester byproducts formed in the one-pot cyclization reaction. An alternative entry to benzylic diketones has also been provided that makes use of a low-order cyanocuprate reagent to prepare in fair yields a class of compounds otherwise uneasily accessible.

  DOI：

  10.1021/jo034905h

文献信息

• Binding of Tetramethylammonium to Polyether Side-Chained Aromatic Hosts. Evaluation of the Binding Contribution from Ether Oxygen Donors
  作者：Sandra Bartoli、Gina De Nicola、Stefano Roelens

  DOI：10.1021/jo034905h

  日期：2003.10.1

  A set of macrocyclic and open-chain aromatic ligands endowed with polyether side chains has been prepared to assess the contribution of ether oxygen donors to the binding of tetramethylammonium (TMA), a cation believed incapable of interacting with oxygen donors. The open-chain hosts consisted of an aromatic binding site and side chains possessing a variable number of ether oxygen donors; the macrocyclic ligands were based on the structure of a previously investigated host, the dimeric cyclophane 1,4-xylylene-1,4-phenylene diacetate (DXPDA), implemented with polyether-type side chains in the backbone. Association to tetramethylammonium picrate (TMAP) was measured in CDCl3 at T = 296 K by H-1 NMR titrations. Results confirm that the main contribution to the binding of TMA comes from the cation-pi interaction established with the aromatic binding sites, but they unequivocally show that polyether chains participate with cooperative contributions, although of markedly smaller entity. Water is also bound, but the two guests interact with aromatic rings and oxygen donors in an essentially noncompetitive way. An improved procedure for the preparation of cyclophanic tetraester derivatives has been developed that conveniently recycles the oligomeric ester byproducts formed in the one-pot cyclization reaction. An alternative entry to benzylic diketones has also been provided that makes use of a low-order cyanocuprate reagent to prepare in fair yields a class of compounds otherwise uneasily accessible.
• Ruthenium-Catalyzed Selective Hydro<i>boronolysis</i> of Ethers
  作者：Akash Kaithal、Deepti Kalsi、Varadhan Krishnakumar、Sandip Pattanaik、Alexis Bordet、Walter Leitner、Chidambaram Gunanathan

  DOI：10.1021/acscatal.0c04269

  日期：2020.12.18

  the formation of alkylboronate esters and methane. Cyclic ethers are also amenable to catalytic hydroboronolysis. Mechanistic studies indicated the immediate in situ formation of a mono-hydridobridged dinuclear ruthenium complex [(η6-p-cymene)RuCl}2(μ–H−μ–Cl)] (2), which is highly active for hydroboronolysis of ethers. Over time, the dinuclear species decompose to produce ruthenium nanoparticles that

  HBpin的钌催化反应与取代有机醚导致的C-O键的激活，导致通过加氢形成烷烃和硼酸酯的boronolysis。使用钌预催化剂[Ru（对-cymene）Cl] 2 Cl 2（1），反应在135°C和大气压（135°C时约1.5 bar）的纯净条件下进行。不对称的二苄基醚在电子相对较差的C-O键上进行选择性氢硼水解。在芳基苄基或烷基苄基醚中，C O键裂解选择性地发生在C Bn -OR键上（Bn =苄基）；在烷基甲基醚中，C Me的选择性解构-OR键导致形成烷基硼酸酯和甲烷。环醚也适合催化氢硼水解。机制研究表明在单hydridobridged双核钌络合物原位形成立即[（η 6 - p -cymene）的RuCl} 2（μ-H-μ-Cl）的（2），它是高活性的用于水力boronolysis醚。随着时间的流逝，双核物质分解产生钌纳米颗粒，该钌纳米颗粒也对该转化具有活性。使用这种催化系统，氢硼分解