4-hydroxyphenyl 4-ethylbenzoate | 73092-80-5

• 分子结构分类: 有机化合物 - 苯丙烷和聚酮 - 缩酚酸和缩酚酸环醚类
• 英文名称: 4-hydroxyphenyl 4-ethylbenzoate
• 英文别名: (4-Hydroxyphenyl) 4-ethylbenzoate
• CAS: 73092-80-5
• 化学式: C₁₅H₁₄O₃
• 分子量: 242.274
• InChiKey: XMJKIWHFALGYCM-UHFFFAOYSA-N

物化性质

• 沸点：
  409.9±38.0 °C(Predicted)
• 密度：
  1.187±0.06 g/cm3(Predicted)

计算性质

• 辛醇/水分配系数(LogP)：
  4
• 重原子数：
  18
• 可旋转键数：
  4
• 环数：
  2.0
• sp3杂化的碳原子比例：
  0.13
• 拓扑面积：
  46.5
• 氢给体数：
  1
• 氢受体数：
  3

反应信息

• 作为反应物：
  描述：

  4-hydroxyphenyl 4-ethylbenzoate 、 4-(2-丙烯醛基氧基乙基-1-氧基)-苯甲酸 在 4-二甲氨基吡啶 、 N,N'-二环己基碳二亚胺 作用下， 以 二氯甲烷 为溶剂， 反应 24.0h， 以72%的产率得到4-(4-(2-(acryloyloxy)ethoxy)benzoyloxy)phenyl-4-ethylbenzoate
  参考文献：
  名称：

  Synthesis, structure, and mesomorphism of novel liquid crystalline acrylate monomers and polymers

  摘要：

  A series of novel liquid crystalline monomers (M-1-M-8) and side chain polymers base polyacrylate backbone were synthesized. The chemical structures were characterized by FT-IR and H-1-NMR spectra. The mesomorphism and thermal behavior was investigated by polarizing optical microscopy, differential scanning calorimetry, and thermogravimetric analysis. The relationships of structure and mesomorphism are discussed in detail. The eight monomers and their corresponding polymers all show enantiotropic nematic phase. With increasing the spacer length or flexibility of the terminal group, the melting temperature (T-m) and isotropic temperature (T-i) of the corresponding monomers and polymers all decreased. However, with increasing the rigidity of the mesogenic core, T-m and T-i of the corresponding monomers and polymers all increased. TGA showed that all the polymers obtained in this study had excellent thermal stability.

  DOI：

  10.1080/15421406.2015.1017295
• 作为产物：
  描述：

  对乙基苯甲酸 在 吡啶 、 氯化亚砜 作用下， 以 四氢呋喃 、 N,N-二甲基甲酰胺 为溶剂， 反应 10.0h， 生成 4-hydroxyphenyl 4-ethylbenzoate
  参考文献：
  名称：

  Synthesis, structure, and mesomorphism of novel liquid crystalline acrylate monomers and polymers

  摘要：

  A series of novel liquid crystalline monomers (M-1-M-8) and side chain polymers base polyacrylate backbone were synthesized. The chemical structures were characterized by FT-IR and H-1-NMR spectra. The mesomorphism and thermal behavior was investigated by polarizing optical microscopy, differential scanning calorimetry, and thermogravimetric analysis. The relationships of structure and mesomorphism are discussed in detail. The eight monomers and their corresponding polymers all show enantiotropic nematic phase. With increasing the spacer length or flexibility of the terminal group, the melting temperature (T-m) and isotropic temperature (T-i) of the corresponding monomers and polymers all decreased. However, with increasing the rigidity of the mesogenic core, T-m and T-i of the corresponding monomers and polymers all increased. TGA showed that all the polymers obtained in this study had excellent thermal stability.

  DOI：

  10.1080/15421406.2015.1017295

文献信息

• Cross Redox Coupling of Aryl-Aldehydes and <i>p</i>-Benzoquinone
  作者：Anima Bose、Prasenjit Mal

  DOI：10.1021/acs.joc.5b02175

  日期：2015.11.6

  unprecedented Cross Redox Coupling (CRC) reaction catalyzed by Cu(OAc)2·H2O. As a proof-of-concept, direct coupling of aromatic aldehydes (or alcohols) and p-benzoquinone led to an ester in the presence of the Cu(II)–TBHP combination. During the coupling process, the C–H bond of the aldehydes was converted directly to a C–O bond. Mechanistically, we propose that the reaction proceeded via a radical pathway

  在本文中，我们报道了前所未有Ç罗斯- [R EDOX Ç用Cu（OAc）催化oupling（CRC）反应2 ·H 2 O.作为证明的概念，芳族醛（或醇）和直接耦合p醌导致在Cu（II）-TBHP组合存在下生成酯。在偶联过程中，醛的C–H键直接转化为C–O键。从机理上讲，我们建议反应是通过自由基途径进行的。此外，在此CRC反应过程中，原子和电子经济性得到了很好的保守。
• Transformation kinetics of liquid-crystallines based on 1,4-phenylene 4-n-alkylbenzoate-4-allyloxybenzoate by DSC
  作者：Zhonglin Bo、Yiping Shen

  DOI：10.1002/(sici)1097-4601(1997)29:5<317::aid-kin1>3.0.co;2-x

  日期：——

  The transformation kinetics of a series of liquid-crystallines based on 1,4-phenylene 4-n-alkybenzoate-4-allyloxybenzoate (PABAOB) was studied by nonisothermal methods using differential scanning calorimetry. These determinations led to the values of activation energy of transformation from 691.3 to 628.3 kJ/mol, respectively The values of the Avrami exponent n were from 3.0 to 2.6. The values of transformation activation energy decreased with the ascending of alkyl. The result shows that the process of transformation of PABAOB is a constant number of nuclei growing in three dimensions at constant rate and the crystal growth being controlled probably by a diffusion process. (C) 1997 John Wiley & Sons, Inc.