1,3-bis[4-(2-hydroxyethyloxy)benzylidene]acetone | 918339-99-8

• 分子结构分类: 有机化合物 - 苯类化合物 - 苯酚醚
• 英文名称: 1,3-bis[4-(2-hydroxyethyloxy)benzylidene]acetone
• 英文别名: (1E,4E)-1,5-bis[4-(2-hydroxyethoxy)phenyl]penta-1,4-dien-3-one
• CAS: 918339-99-8
• 化学式: C₂₁H₂₂O₅
• 分子量: 354.403
• InChiKey: NAOUTFKZGVQWAS-FACPPWRESA-N

物化性质

• 沸点：
  618.3±55.0 °C(Predicted)
• 密度：
  1.226±0.06 g/cm3(Predicted)

计算性质

• 辛醇/水分配系数(LogP)：
  2.72
• 重原子数：
  26.0
• 可旋转键数：
  10.0
• 环数：
  2.0
• sp3杂化的碳原子比例：
  0.19
• 拓扑面积：
  75.99
• 氢给体数：
  2.0
• 氢受体数：
  5.0

反应信息

• 作为产物：
  描述：

  (1E,4E)-1,5-bis(4-hydroxyphenyl)penta-1,4-dien-3-one 、 2-氯乙醇 在 potassium carbonate 作用下， 以 N,N-二甲基甲酰胺 为溶剂， 反应 24.0h， 以81%的产率得到1,3-bis[4-(2-hydroxyethyloxy)benzylidene]acetone
  参考文献：
  名称：

  Photoactive liquid crystalline polyesters based on bisbenzylidene and pyridine moieties

  摘要：

  Photoactive main chain liquid crystalline polyesters containing bis(benzylidene)acetone and aromatic heterocyclic pyridine were synthesized by solution polycondensation. Chemical structure of monomers and polymers were confirmed by IFT-IR, H-1 and C-13 NMR spectroscopy. Thermal property was investigated by TGA and DSC. Optical property of polyesters was studied in chloroform solution and in thin film under UV irradiation and exhibited cis-trans-photoisomerization. This behavior was witnessed by solubility, carbonyl group absorption band in FF-IR, optical microscopy as well as DSC analysis through existence of liquid crystallinity after irradiation of polymers. (c) 2009 Elsevier B.V. All rights reserved.

  DOI：

  10.1016/j.molstruc.2009.10.038

文献信息

• US4923958A
  申请人：——

  公开号：US4923958A

  公开（公告）日：1990-05-08
• US4965399A
  申请人：——

  公开号：US4965399A

  公开（公告）日：1990-10-23
• Photoactive liquid crystalline polyesters based on bisbenzylidene and pyridine moieties
  作者：G. Deepa、R. Balamurugan、P. Kannan

  DOI：10.1016/j.molstruc.2009.10.038

  日期：2010.1

  Photoactive main chain liquid crystalline polyesters containing bis(benzylidene)acetone and aromatic heterocyclic pyridine were synthesized by solution polycondensation. Chemical structure of monomers and polymers were confirmed by IFT-IR, H-1 and C-13 NMR spectroscopy. Thermal property was investigated by TGA and DSC. Optical property of polyesters was studied in chloroform solution and in thin film under UV irradiation and exhibited cis-trans-photoisomerization. This behavior was witnessed by solubility, carbonyl group absorption band in FF-IR, optical microscopy as well as DSC analysis through existence of liquid crystallinity after irradiation of polymers. (c) 2009 Elsevier B.V. All rights reserved.