biphenyl-2,3,5,6-tetracarboxylic acid | 24066-78-2

• 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: biphenyl-2,3,5,6-tetracarboxylic acid
• 英文别名: Diphenyl-tetracarbonsaeure-(2.3.5.6)；Biphenyl-2,3,5,6-tetracarbonsaeure；3-Phenylbenzene-1,2,4,5-tetracarboxylic acid
• CAS: 24066-78-2
• 化学式: C₁₆H₁₀O₈
• 分子量: 330.251
• InChiKey: UNIBAJHMJGXVHL-UHFFFAOYSA-N

物化性质

• 沸点：
  571.8±50.0 °C(Predicted)
• 密度：
  1.612±0.06 g/cm3(Predicted)

计算性质

• 辛醇/水分配系数(LogP)：
  1.7
• 重原子数：
  24
• 可旋转键数：
  5
• 环数：
  2.0
• sp3杂化的碳原子比例：
  0.0
• 拓扑面积：
  149
• 氢给体数：
  4
• 氢受体数：
  8

反应信息

• 作为反应物：
  描述：

  biphenyl-2,3,5,6-tetracarboxylic acid 在 乙酸酐 作用下， 生成 biphenyl-2,3,5,6-tetracarboxylic acid-2,3;5,6-dianhydride
  参考文献：
  名称：

  Michael; Bucher, American Chemical Journal, 1898, vol. 20, p. 110

  摘要：

  DOI：
• 作为产物：
  描述：

  1-苯基萘-2,3-二羧酸 在 potassium permanganate 作用下， 生成 biphenyl-2,3,5,6-tetracarboxylic acid
  参考文献：
  名称：

  Bucher, Journal of the American Chemical Society, 1908, vol. 30, p. 1247

  摘要：

  DOI：

文献信息

• [EN] NOVEL MANGANESE COMPRISING NANOSTRUCTURES<br/>[FR] NOUVELLES NANOSTRUCTURES COMPORTANT DU MANGANÈSE
  申请人：SPAGO IMAGING AB

  公开号：WO2013041623A1

  公开（公告）日：2013-03-28

  Disclosed herein are nanostructures comprising a polymeric framework comprising at least five geminal bisphosphonate groups, wherein the geminal bisphosphonate groups independently of each other are incorporated as - R3R4C(P=O(OR1)(OR2))2, wherein R1 and R2 are independently selected from the group consisting of a negative charge, H, alkyl and aryl, and wherein at least one of R3 and R4 is a group connected to the polymeric framework with the proviso that when only one of R3 and R4 is such a connected group, the other of R3 and R4 is either a group being able to connect to the polymeric framework, or the residue of such a group, or selected from the group consisting of H, OH, OR5 and R5, wherein R5 is a lower alkyl. The polymeric framework may comprise manganese ions. Disclosed are also methods for producing such manganese containing nanostructures, compositions comprising such manganese containing nanostructures and use of such manganese con¬ taining nanostructures, i.a. as MRI contrasting agents.

  本文披露了包含至少五个伽那双膦酸酯基团的聚合物框架的纳米结构，其中这些伽那双膦酸酯基团独立地被结合为-R3R4C(P=O(OR1)(OR2))2，其中R1和R2分别从阴离子、H、烷基和芳基组成的组中独立选择，且其中R3和R4中至少有一个是连接到聚合物框架的基团，但有一个限制条件，即当R3和R4中仅有一个是这样的连接基团时，另一个R3和R4要么是能够连接到聚合物框架的基团，要么是这种基团的残基，或者从H、OH、OR5和R5组成的组中选择，其中R5是较低的烷基。聚合物框架可能包括锰离子。还披露了制备含锰的纳米结构的方法，包含这种含锰纳米结构的组合物以及使用这种含锰纳米结构，例如作为MRI对比剂。
• Nanostructures comprising manganese
  申请人：Spago Imaging AB

  公开号：EP2572736A1

  公开（公告）日：2013-03-27

  Disclosed herein are nanostructures comprising manganese ions incorporated in a polymeric framework comprising at least five geminal bisphosphonate groups, wherein the geminal bisphosphonate groups independently of each other are incorporated as -R3R4C(P=O(OR2)(OR2))2, wherein R1 and R2 are independently selected from the group consisting of a negative charge, H, alkyl and aryl, and wherein at least one of R3 and R4 is a group connected to the polymeric framework with the proviso that when only one of R3 and R4 is such a connected group, the other of R3 and R4 is either a group being able to connect to the polymeric framework, or the residue of such a group, or selected from the group consisting of H, OH, OR5 and R5, wherein R5 is a lower alkyl. Disclosed are also methods for producing such nanostructures, compositions comprising such nanostructures and use of such nanostructures, i.a. as MRI contrasting agents.

  本文披露了一种包含锰离子的纳米结构，所述纳米结构包括至少五个伽那双膦酸酯基团的聚合物框架，其中这些伽那双膦酸酯基团独立地被结合为-R3R4C(P=O(OR2)(OR2))2，其中R1和R2分别选自负电荷、H、烷基和芳基组成的组，且R3和R4中至少一个是连接到聚合物框架的基团，但有一个例外，即当R3和R4中仅有一个是这样的连接基团时，另一个则是能够连接到聚合物框架的基团，或者是这样一个基团的残基，或者选自H、OH、OR5和R5组成的组，其中R5是较低的烷基。还披露了制备这种纳米结构的方法、包含这种纳米结构的组合物以及这种纳米结构的用途，例如作为磁共振成像对比剂。
• POLYIMIDE PRECURSOR, POLYIMIDE, AND MATERIALS TO BE USED IN PRODUCING SAME
  申请人：Takasawa Ryoichi

  公开号：US20130178597A1

  公开（公告）日：2013-07-11

  Disclosed is a novel co-polyimide precursor for producing a polyimide having high transparency. The co-polyimide precursor comprises a unit structure represented by general Formula (A1) and a unit structure represented by general Formula (A2): wherein, in general Formula (A1), R 1 represents a hydrogen atom or an alkyl group having 1 to 4 carbon atoms; and R 2 and R 3 each independently represent a hydrogen atom, an alkyl group having 1 to 6 carbon atoms, or an alkylsilyl group having 3 to 9 carbon atoms, wherein, in general Formula (A2), R 4 represents a hydrogen atom or an alkyl group having 1 to 4 carbon atoms; R 5 and R 6 each independently represent a hydrogen, an alkyl group having 1 to 6 carbon atoms, or an alkylsilyl group having 3 to 9 carbon atoms; and X represents a tetravalent group other than those represented by Formulae (A3):

  本发明涉及一种新型共聚酰亚胺前体，用于制备具有高透明度的聚酰亚胺。该共聚酰亚胺前体包括由通式（A1）表示的单元结构和由通式（A2）表示的单元结构：其中，在通式（A1）中，R1表示氢原子或具有1至4个碳原子的烷基基团；R2和R3各自独立地表示氢原子、具有1至6个碳原子的烷基基团或具有3至9个碳原子的烷基硅基团，在通式（A2）中，R4表示氢原子或具有1至4个碳原子的烷基基团；R5和R6各自独立地表示氢原子、具有1至6个碳原子的烷基基团或具有3至9个碳原子的烷基硅基团；X表示除通式（A3）所表示的四价基团以外的四价基团。
• NOVEL MANGANESE COMPRISING NANOSTRUCTURES
  申请人：SPAGO IMAGING AB

  公开号：US20140350193A1

  公开（公告）日：2014-11-27

  Disclosed herein are nanostructures comprising a polymeric framework comprising at least five geminal bisphosphonate groups, wherein the geminal bisphosphonate groups independently of each other are incorporated as —R 3 R 4 C(P═O(OR 1 )(OR 2 )) 2 , wherein R 1 and R 2 are independently selected from the group consisting of a negative charge, H, alkyl and aryl, and wherein at least one of R 3 and R 4 is a group connected to the polymeric framework with the proviso that when only one of R 3 and R 4 is such a connected group, the other of R 3 and R 4 is either a group being able to connect to the polymeric framework, or the residue of such a group, or selected from the group consisting of H, OH, OR 5 and R 5 , wherein R 5 is a lower alkyl. The polymeric framework may comprise manganese ions. Disclosed are also methods for producing such manganese containing nanostructures, compositions comprising such manganese containing nanostructures and use of such manganese containing nanostructures, i.a. as MRI contrasting agents.

  本文披露了一种纳米结构，包括至少五个双磷酸酯基团的聚合物框架，其中双磷酸酯基团独立地作为-R3R4C（P═O（OR1）（OR2））2并入，其中R1和R2分别选择自阴离子、H、烷基和芳基的群组，而且R3和R4中至少有一个是连接到聚合物框架的群组，但是当R3和R4中仅有一个是这样的连接群组时，另一个则为能够连接到聚合物框架的群组，或是这样的群组的残基，或选择自H、OH、OR5和R5的群组，其中R5是较低的烷基。聚合物框架可以包括锰离子。此外，本文还披露了制备这种含锰纳米结构的方法，包含这种含锰纳米结构的组合物以及使用这种含锰纳米结构的方法，例如作为MRI对比剂。
• Process of preparing polyamides and/or polyimides
  申请人：MITSUI TOATSU CHEMICALS, Inc.

  公开号：EP0194058A2

  公开（公告）日：1986-09-10

  A polyamide and/or polyimide is prepared by using N,N'- dimethylethyleneurea or N,N'-dimethylpropyleneurea as a solvent for polycondensation of a polycarboxylic acid and a diisocyanate at a temperature above 100°C in the presence of an alkali metal carbonate, alkali metal hydrogencarbonate, alkali metal hydroxide or an alkali metal salt of a polycarboxylic acid. Where an alkali metal salt of a polycarboxylic acid is employed, the salt is preferably of an acid having the same or a similar structure to the polycarboxylic acid participating in the polycondensation reaction.

  以 N,N'-二甲基亚乙基脲或 N,N'-二甲基丙基脲为溶剂，在碱金属碳酸盐、碱金属碳酸氢盐、碱金属氢氧化物或聚羧酸的碱金属盐存在下，在 100°C 以上的温度下进行聚羧酸和二异氰酸酯的缩聚反应，制备聚酰胺和/或聚酰亚胺。 在使用聚羧酸的碱金属盐时，盐最好是与参与缩聚反应的聚羧酸具有相同或相似结构的酸。