methyl 2,4-di-(4-methoxy-benzyloxy)benzoate | 1165713-03-0

• 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: methyl 2,4-di-(4-methoxy-benzyloxy)benzoate
• CAS: 1165713-03-0
• 化学式: C₂₄H₂₄O₆
• 分子量: 408.451
• InChiKey: KWLZSWUJHOQLDY-UHFFFAOYSA-N

物化性质

• 沸点：
  569.7±45.0 °C(Predicted)
• 密度：
  1.184±0.06 g/cm3(Predicted)

计算性质

• 辛醇/水分配系数(LogP)：
  4.65
• 重原子数：
  30.0
• 可旋转键数：
  9.0
• 环数：
  3.0
• sp3杂化的碳原子比例：
  0.21
• 拓扑面积：
  63.22
• 氢给体数：
  0.0
• 氢受体数：
  6.0

反应信息

• 作为反应物：
  描述：

  methyl 2,4-di-(4-methoxy-benzyloxy)benzoate 在 silica-immobilized p-TsOH 作用下， 以 甲苯 为溶剂， 反应 0.5h， 以68%的产率得到2-羟基-4-[(4-甲氧基苄基)氧基]苯甲酸甲酯
  参考文献：
  名称：

  Factors affecting orthogonality in the deprotection of 2,4-di-protected aromatic ethers employing solid-supported acids

  摘要：

  Selective deprotection of aromatic ethers bearing two protecting groups on the same aromatic ring by solid-supported acids (Amberlyst-15 and PTS-Si) was systematically investigated. ortho-Directing protonation by the carbonyl group as well as carbocation stability and quenching are the important determining factors for the orthogonal deprotection process. Stablilized carbocations (e.g., those from the MOM and PMB groups) could be removed with high selectivity. (C) 2009 Elsevier Ltd. All rights reserved.

  DOI：

  10.1016/j.tet.2009.03.089
• 作为产物：
  描述：

  2,4-二羟基苯甲酸甲酯 、 alkaline earth salt of/the/ methylsulfuric acid 在 potassium carbonate 作用下， 以 N,N-二甲基甲酰胺 为溶剂， 反应 0.08h， 以59%的产率得到methyl 2,4-di-(4-methoxy-benzyloxy)benzoate
  参考文献：
  名称：

  Factors affecting orthogonality in the deprotection of 2,4-di-protected aromatic ethers employing solid-supported acids

  摘要：

  Selective deprotection of aromatic ethers bearing two protecting groups on the same aromatic ring by solid-supported acids (Amberlyst-15 and PTS-Si) was systematically investigated. ortho-Directing protonation by the carbonyl group as well as carbocation stability and quenching are the important determining factors for the orthogonal deprotection process. Stablilized carbocations (e.g., those from the MOM and PMB groups) could be removed with high selectivity. (C) 2009 Elsevier Ltd. All rights reserved.

  DOI：

  10.1016/j.tet.2009.03.089