5-Bromo-2-(4-chloro-2-methylphenyl)isoindole-1,3-dione

• 分子结构分类: 有机化合物 - 有机杂环化合物 - 异吲哚及其衍生物
• 英文名称: 5-Bromo-2-(4-chloro-2-methylphenyl)isoindole-1,3-dione
• 化学式: C₁₅H₉BrClNO₂
• 分子量: 350.59
• InChiKey: LENJMZRVYNNSEG-UHFFFAOYSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  4.1
• 重原子数：
  20
• 可旋转键数：
  1
• 环数：
  3.0
• sp3杂化的碳原子比例：
  0.07
• 拓扑面积：
  37.4
• 氢给体数：
  0
• 氢受体数：
  2

文献信息

• Soluble, low dielectrical constant, unsymmetrical polyimide and a method for preparing the same
  申请人：Zhang Suobo

  公开号：US20060235192A1

  公开（公告）日：2006-10-19

  The present invention relates to a soluble unsymmetrical polyimide and a method for preparing the same. The soluble unsymmetrical polyimide can be obtained by polymerizing an easily prepared dihalogen-substituted phthalimide as the monomer in the presence of transition metal nickel catalyst. In the polymerization process, the linkage of C-C bond in polymer has modes of head-to head, tail to tail and head to tail. The solubility of the unsymmetrical polyimide originates from the unsymmetrical nature of the polymer. Only those improved unsymmetrical polyimide has excellent solubility, high mechanical properties, thermal stability, low dielectric constant and low linear expansion coefficient. The present invention directly synthesizes the unsymmetrical polyimide by means of coupling reaction. Thus, not only the steps of synthesizing dianhydride and diamine are omitted, but also the properties of the polymer are improved and the production cost is greatly reduced.

  本发明涉及一种可溶性非对称聚酰亚胺及其制备方法。该可溶性非对称聚酰亚胺可通过在过渡金属镍催化剂存在下聚合易于制备的二卤代邻苯二酰亚胺单体而得到。在聚合过程中，聚合物中的C-C键连接方式有头对头、尾对尾和头对尾。非对称聚酰亚胺的溶解度源于聚合物的非对称性。只有那些改进的非对称聚酰亚胺具有优异的溶解度、高机械性能、热稳定性、低介电常数和低线性膨胀系数。本发明通过偶联反应直接合成非对称聚酰亚胺。因此，不仅省略了合成二酸酐和二胺的步骤，而且改善了聚合物的性能，大大降低了生产成本。