Dibutyl 2,3-dibromobutanedioate | 2050-55-7

• 分子结构分类: 有机化合物 - 脂质和类脂质分子 - 脂肪酰基
• 英文名称: Dibutyl 2,3-dibromobutanedioate
• CAS: 2050-55-7
• 化学式: C₁₂H₂₀Br₂O₄
• 分子量: 388.09
• InChiKey: WOHNIDNINFYOAI-UHFFFAOYSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  4.2
• 重原子数：
  18
• 可旋转键数：
  11
• 环数：
  0.0
• sp3杂化的碳原子比例：
  0.83
• 拓扑面积：
  52.6
• 氢给体数：
  0
• 氢受体数：
  4

文献信息

• Process for producing chromone compound
  申请人：Hibino Hiroaki

  公开号：US20050085664A1

  公开（公告）日：2005-04-21

  A process for producing a dicarboxylic acid compound represented by the formula (4): wherein R 1 and R 2 are the same or different and each represents lower alkyl and the wavy line indicates that this compound is the E- or Z-isomer or a mixture of them, characterized by reacting a compound represented by the formula (2): wherein R 1 , R 2 and the wavy line have the same meanings as the above, and one of X 2 and X 3 represents hydrogen and the other represents halogen, with nitrophenol represented by the formula (3): in the presence of a base; a process for producing a nitrochromone compound represented by the formula (5): wherein R 1 has the same meaning as the above, characterized by reacting the dicarboxylic acid compound or carboxylic acid thereof with an acid; a process for producing an aminochromone compound which comprises reducing the nitrochromone compound; and a process for producing an amidochromone compound which comprises acylating the aminochromone compound are provided.

  提供一种制备式（4）的二羧酸化合物的方法，其中R1和R2相同或不同，每个代表低级烷基，波浪线表示该化合物是E或Z异构体或它们的混合物，其特征在于将式（2）的化合物与硝基酚在碱的存在下反应，式中R1、R2和波浪线的含义与上述相同，X2和X3中的一个代表氢，另一个代表卤素；提供一种制备式（5）的硝基香豆素化合物的方法，其中R1的含义与上述相同，其特征在于将二羧酸化合物或其羧酸与酸反应；提供一种制备氨基香豆素化合物的方法，其包括还原硝基香豆素化合物；以及提供一种制备酰胺香豆素化合物的方法，其包括酰化氨基香豆素化合物。
• THERMOPLASTIC RESIN COMPOSITION
  申请人：Kaneka Corporation

  公开号：EP1398353A1

  公开（公告）日：2004-03-17

  A thermoplastic resin composition comprising a thermoplastic resin (a) and a block copolymer (b) containing a methacrylic polymer block (A) and an acrylic polymer block (B).

  一种热塑性树脂组合物，由热塑性树脂（a）和嵌段共聚物（b）组成，嵌段共聚物含有甲基丙烯酸聚合物嵌段（A）和丙烯酸聚合物嵌段（B）。
• BLOCK COPOLYMER
  申请人：KANEKA CORPORATION

  公开号：EP1475397A1

  公开（公告）日：2004-11-10

  The present invention relates to a block copolymer (A) including a (meth)acrylic polymer block (a) and an acrylic polymer block (b). The (meth)acrylic polymer block (a) is preferably copolymerized with a monomer having a functional group having high cohesive force, such as a carboxyl group, so that the 5%-weight-loss temperature is 300°C or more or the tensile strength is 3 MPa or more, and the hardness measured by a type A durometer according to JIS K6253 is 50 or less, and a compression set measured after 22 hours at 70°C is 45% or less. The block copolymer (A) exhibits excellent thermal decomposition resistance and low compression set at high temperatures. The block copolymer (A) can be used as a soft material for automobile, and has low hardness, high adhesion, high oil resistance, high weather resistance, high heat resistance, high recycling property, high tensile properties; and high wax remover resistance.

  本发明涉及一种嵌段共聚物（A），包括（甲基）丙烯酸聚合物嵌段（a）和丙烯酸聚合物嵌段（b）。(甲基)丙烯酸聚合物嵌段(a)最好与具有高内聚力官能团（如羧基）的单体共聚，从而使 5%失重温度为 300°C 或以上，或拉伸强度为 3 MPa 或以上，且根据 JIS K6253 用 A 型硬度计测量的硬度为 50 或以下，在 70°C 下 22 小时后测量的压缩永久变形为 45% 或以下。嵌段共聚物（A）具有优异的抗热分解性能，高温下的压缩永久变形小。嵌段共聚物（A）可用作汽车软质材料，具有低硬度、高附着力、高耐油性、高耐候性、高耐热性、高回收性、高拉伸性和高抗脱蜡性。
• PROCESS FOR PRODUCING CHROMONE COMPOUND
  申请人：Sumitomo Chemical Company, Limited

  公开号：EP1479667A1

  公开（公告）日：2004-11-24

  A process for producing a dicarboxylic acid compound represented by the formula (4): wherein R1 and R2 are the same or different and each represents lower alkyl and the wavy line indicates that this compound is the E- or Z-isomer or a mixture of them, characterized by reacting a compound represented by the formula (2): wherein R1, R2 and the wavy line have the same meanings as the above, and one of X2 and X3 represents hydrogen and the other represents halogen, with nitrophenol represented by the formula (3): in the presence of a base; a process for producing a nitrochromone compound represented by the formula (5): wherein R1 has the same meaning as the above, characterized by reacting the dicarboxylic acid compound or carboxylic acid thereof with an acid; a process for producing an aminochromone compound which comprises reducing the nitrochromone compound; and a process for producing an amidochromone compound which comprises acylating the aminochromone compound are provided.

  一种生产由式(4)代表的二羧酸化合物的工艺： 其中 R1 和 R2 相同或不同，且各自代表低级烷基，波浪线表示该化合物为 E-或 Z-异构体或它们的混合物，其特征在于使式（2）所代表的化合物反应： 其中 R1、R2 和波浪线的含义与上述相同，X2 和 X3 中的一个代表氢，另一个代表卤素： 在碱存在下；生产式（5）代表的硝基色酮化合物的工艺： 其中 R1 的含义与上述相同，其特征在于使二羧酸化合物或其羧酸与酸反应；提供了一种生产氨基色素化合物的工艺，该工艺包括还原硝基色素化合物；以及一种生产氨基色素化合物的工艺，该工艺包括酰化氨基色素化合物。
• ACRYLIC BLOCK COPOLYMER AND THERMOPLASTIC RESIN COMPOSITION
  申请人：KANEKA CORPORATION

  公开号：EP1541595A1

  公开（公告）日：2005-06-15

  The present invention provides a novel acrylic block copolymer rich in flexibility and excellent in mechanical strength, moldability, oil resistance, heat resistance, thermal decomposition resistance, weather resistance, and compression set, and further rich in reactivity. The present invention also provides compositions, seal products, and automobile, electric, and electronic parts, all of which include the acrylic block copolymer. The acrylic block copolymer includes a methacrylic polymer block (a) and an acrylic polymer block (b), at least one of the polymer blocks containing, in its main chain, at least one acid anhydride group (c) represented by formula (1): (wherein R1s each represent hydrogen or a methyl group and may be the same or different, n represents an integer of 0 to 3, and m represents an integer of 0 or 1).

  本发明提供了一种新型丙烯酸嵌段共聚物，它具有丰富的柔韧性和优异的机械强度、成型性、耐油性、耐热性、耐热分解性、耐候性和压缩永久变形性，而且还具有丰富的反应活性。本发明还提供了包括丙烯酸嵌段共聚物的组合物、密封产品以及汽车、电气和电子零件。丙烯酸嵌段共聚物包括甲基丙烯酸聚合物嵌段（a）和丙烯酸聚合物嵌段（b），其中至少一个聚合物嵌段的主链中含有至少一个酸酐基团（c），由式（1）表示： (其中 R1s 分别代表氢或甲基，可以相同或不同，n 代表 0 至 3 的整数，m 代表 0 或 1 的整数）。