4-[(6-Ethoxy-1,3-benzothiazol-2-yl)iminomethyl]benzene-1,3-diol | 131266-57-4

• 分子结构分类: 有机化合物 - 有机杂环化合物 - 苯并噻唑类
• 英文名称: 4-[(6-Ethoxy-1,3-benzothiazol-2-yl)iminomethyl]benzene-1,3-diol
• CAS: 131266-57-4
• 化学式: C₁₆H₁₄N₂O₃S
• 分子量: 314.365
• InChiKey: BBMHHHMXIJPOEJ-UHFFFAOYSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  3.6
• 重原子数：
  22
• 可旋转键数：
  4
• 环数：
  3.0
• sp3杂化的碳原子比例：
  0.12
• 拓扑面积：
  103
• 氢给体数：
  2
• 氢受体数：
  6

反应信息

• 作为反应物：
  描述：

  4-[(6-Ethoxy-1,3-benzothiazol-2-yl)iminomethyl]benzene-1,3-diol 、 己酸 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 、 N,N-二甲基甲酰胺 为溶剂， 反应 4.0h， 以35%的产率得到
  参考文献：
  名称：

  Synthesis and Mesomorphic Properties of 6-Methoxy- and 6-Ethoxy-2-(2-Hydroxy-4-Alkanoyloxybenzylidenamino)Benzothiazoles

  摘要：

  Two new series of Schiff base thermotropic liquid crystals, 6-methoxy-2-(2-hydroxy-4-alkanoyloxybenzylidenamino)benzothiazoles and 6-ethoxy-2-(2-hydroxy-4-alkanoyloxybenzylidenamino)benzothiazoles, comprising different terminal groups, a methoxyl and ethoxyl group, respectively, were synthesized. Structural elucidation was carried out using elemental analysis and spectroscopic techniques such as Fourier transform infrared (FTIR), 1H and 13C nuclear magnetic resources (NMR), and mass spectrometry. The mesomorphic properties and thermal stabilities of the title compounds were studied by using differential scanning calorimetry, optical polarizing microscopy, and thermogravimetric analysis. No liquid-crystal phases were observed for the short-chain members (n=2 and 3) in both series, and the remaining members all exhibited nematic phase with Schlieren or marble-like textures. Effects of the lateral hydroxyl group, terminal group, and the length of the terminal alkanoyloxy chain on the mesomorphic properties are discussed. Structure-property relationships were established upon comparison with other structurally related compounds.

  DOI：

  10.1080/15421406.2010.504510
• 作为产物：
  描述：

  2-氨基-6-乙氧基苯并噻唑 、 2,4-二羟基苯甲醛 在 溶剂黄146 作用下， 以 乙醇 为溶剂， 反应 3.0h， 生成 4-[(6-Ethoxy-1,3-benzothiazol-2-yl)iminomethyl]benzene-1,3-diol
  参考文献：
  名称：

  Synthesis and Mesomorphic Properties of 6-Methoxy- and 6-Ethoxy-2-(2-Hydroxy-4-Alkanoyloxybenzylidenamino)Benzothiazoles

  摘要：

  Two new series of Schiff base thermotropic liquid crystals, 6-methoxy-2-(2-hydroxy-4-alkanoyloxybenzylidenamino)benzothiazoles and 6-ethoxy-2-(2-hydroxy-4-alkanoyloxybenzylidenamino)benzothiazoles, comprising different terminal groups, a methoxyl and ethoxyl group, respectively, were synthesized. Structural elucidation was carried out using elemental analysis and spectroscopic techniques such as Fourier transform infrared (FTIR), 1H and 13C nuclear magnetic resources (NMR), and mass spectrometry. The mesomorphic properties and thermal stabilities of the title compounds were studied by using differential scanning calorimetry, optical polarizing microscopy, and thermogravimetric analysis. No liquid-crystal phases were observed for the short-chain members (n=2 and 3) in both series, and the remaining members all exhibited nematic phase with Schlieren or marble-like textures. Effects of the lateral hydroxyl group, terminal group, and the length of the terminal alkanoyloxy chain on the mesomorphic properties are discussed. Structure-property relationships were established upon comparison with other structurally related compounds.

  DOI：

  10.1080/15421406.2010.504510

文献信息

• Synthesis and Mesomorphic Properties of 6-Methoxy- and 6-Ethoxy-2-(2-Hydroxy-4-Alkanoyloxybenzylidenamino)Benzothiazoles
  作者：Sie-Tiong Ha、Teck-Ming Koh、Guan-Yeow Yeap、Hong-Cheu Lin、Siew-Ling Lee、Yip-Foo Win、Siew-Teng Ong

  DOI：10.1080/15421406.2010.504510

  日期：2010.10.14

  Two new series of Schiff base thermotropic liquid crystals, 6-methoxy-2-(2-hydroxy-4-alkanoyloxybenzylidenamino)benzothiazoles and 6-ethoxy-2-(2-hydroxy-4-alkanoyloxybenzylidenamino)benzothiazoles, comprising different terminal groups, a methoxyl and ethoxyl group, respectively, were synthesized. Structural elucidation was carried out using elemental analysis and spectroscopic techniques such as Fourier transform infrared (FTIR), 1H and 13C nuclear magnetic resources (NMR), and mass spectrometry. The mesomorphic properties and thermal stabilities of the title compounds were studied by using differential scanning calorimetry, optical polarizing microscopy, and thermogravimetric analysis. No liquid-crystal phases were observed for the short-chain members (n=2 and 3) in both series, and the remaining members all exhibited nematic phase with Schlieren or marble-like textures. Effects of the lateral hydroxyl group, terminal group, and the length of the terminal alkanoyloxy chain on the mesomorphic properties are discussed. Structure-property relationships were established upon comparison with other structurally related compounds.