2,3,5-tribromo-1,4-dihydroxybenzene | 23149-36-2

• 分子结构分类: 有机化合物 - 苯类化合物 - 酚类
• 英文名称: 2,3,5-tribromo-1,4-dihydroxybenzene
• 英文别名: 2,3,5-tribromohydroquinone；2,3,5-tribromo-hydroquinone；2,3,5-Tribrom-hydrochinon；2.3.5-Tribrom-1.4-dihydroxy-benzol；2,3,5-tribromo-1,4-benzenediol；1,3,4-Tribrom-2,5-dihydroxy-benzol；Tribromhydrochinon；2,3,5-tribromobenzene-1,4-diol
• CAS: 23149-36-2
• 化学式: C₆H₃Br₃O₂
• 分子量: 346.801
• InChiKey: IFEWMSGMDUQOFZ-UHFFFAOYSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  4.4
• 重原子数：
  11
• 可旋转键数：
  0
• 环数：
  1.0
• sp3杂化的碳原子比例：
  0.0
• 拓扑面积：
  40.5
• 氢给体数：
  2
• 氢受体数：
  2

反应信息

• 作为反应物：
  描述：

  2,3,5-tribromo-1,4-dihydroxybenzene 在 乙醇 、 氢溴酸 、 三氯化铁 、 溶剂黄146 作用下， 生成 四溴对苯醌
  参考文献：
  名称：

  Sarauw, Justus Liebigs Annalen der Chemie, 1881, vol. 209, p. 109

  摘要：

  DOI：
• 作为产物：
  描述：

  2,6-二溴对苯醌 在 乙醚 、 氢溴酸 作用下， 生成 2,3,5-tribromo-1,4-dihydroxybenzene
  参考文献：
  名称：

  Terent'ew et al., Zhurnal Obshchei Khimii, 1954, vol. 24, p. 1433; engl. Ausg. S. 1415

  摘要：

  DOI：

文献信息

• Process for the preparation of halogenated (meth)acrylic esters and poly (meth) arcylates obtained with said (meth)acrylic esters
  申请人：Akzo Nobel N.V.

  公开号：EP0824096A2

  公开（公告）日：1998-02-18

  The present invention is directed to a process for the preparation of (meth)acrylates of halogenated alcohols by direct esterification of said alcohols with (meth)acrylic acid (chloride) wherein at least 2,6-substituted pyridine derivative is used as a polymerization inhibitor at room temperature or lower. Suitable at least 2,6-substituted pyridine derivatives are 2,6-lutidine, 2,4,6-collidine or 2,6-di-tert.butyl-4-methyl pyridine. With the halogenated (meth)acrylate esters prepared with the process according to the invention, very pure homo- and copolymers can be prepared, resulting in polymers having a low optical loss of 0.1 dB/cm or lower at 1300 nm and lower than 0.4 dB/cm at 1550 nm.

  本发明涉及一种通过将卤代醇与（甲基）丙烯酸（氯化物）直接酯化来制备（甲基）丙烯酸酯的方法，其中至少使用一种2,6-取代吡啶衍生物作为聚合抑制剂，温度为室温或更低。适用的至少2,6-取代吡啶衍生物包括2,6-吡啶、2,4,6-考林或2,6-二叔丁基-4-甲基吡啶。 通过根据本发明的方法制备的卤代（甲基）丙烯酸酯，可以制备非常纯净的同聚物和共聚物，从而得到在1300纳米处光学损耗低至0.1 dB/cm或更低，在1550纳米处低于0.4 dB/cm的聚合物。
• Synthetic Clay Excels in ⁹⁰Sr Removal
  作者：Sridhar Komarneni、Tatsuya Kodama、William J. Paulus、C. Carlson

  DOI：10.1557/jmr.2000.0182

  日期：2000.6

  ground water from Hanford site, and fundamental studies of 2Nasup +}yields}Srsup 2+} exchange equilibria revealed that a synthetic clay is extremely selective for sup 90}Sr with a high capacity for uptake. Comparative studies with existing Sr selective ion exchangers clearly revealed that the present synthetic clay exhibited the best performance for sup 90}Sr removal from actual ground water collected

  对来自汉福德场地的实际地下水进行的测试以及对 2Na sup +}产量}Srsup 2+} 交换平衡的基础研究表明，合成粘土对 sup 90}Sr 具有极高的选择性，具有很高的吸收能力。与现有 Sr 选择性离子交换剂的比较研究清楚地表明，本合成粘土表现出从汉福德三个不同位置收集的实际地下水中去除 sup 90}Sr 的最佳性能。这种新型 Sr 离子筛有望用于在意外释放和 sup 90}Sr 污染后净化环境。(c) 2000 材料研究学会。
• Regioselective Aromatic Electrophilic Bromination with Dioxane Dibromide Under Solvent‐Free Conditions
  作者：Subrata Kumar Chaudhuri、Sanchita Roy、M. Saha、Sanjay Bhar

  DOI：10.1080/00397910601055081

  日期：2007.3

  Abstract Highly regioselective ring bromination of aromatic compounds has been accomplished with high yields and good purity using dioxane dibromide (DD) under solvent‐free conditions. Notable features of this methodology include operational simplicity, rapid reactions, excellent control over the degree of bromination, and tolerance of various functional groups during the reaction.

  摘要 在无溶剂条件下使用二恶烷二溴化物 (DD) 以高产率和高纯度实现了芳香族化合物的高区域选择性环溴化。该方法的显着特点包括操作简单、反应快速、对溴化程度的出色控制以及反应过程中各种官能团的耐受性。
• MODIFIER FOR AROMATIC POLYESTER AND AROMATIC POLYESTER RESIN COMPOSITION COMPRISING THE SAME
  申请人：TABATA Masayoshi

  公开号：US20110224343A1

  公开（公告）日：2011-09-15

  The present invention provides a modifier for aromatic polyesters which enhances the melt fluidity of aromatic polyesters without a significant decrease in the heat resistance of the aromatic polyesters, and an aromatic polyester resin composition including the modifier for aromatic polyesters. The present invention relates to a modifier for aromatic polyesters comprising polyhydric phenol residues and residues of aromatic polycarboxylic acid, acid halide or acid anhydride thereof, and the modifier comprises a material having a structure composed of a first residue selected from the group consisting of divalent residues represented by Formula (I): —Ar—W 1 x —Ar— and by Formula (II): —Ar—, the first residues being bonded to two identical or different second residues selected from the group consisting of monovalent residues represented by Formula (III): and monovalent residues represented by Formula (IV): —O—C(O)—R 7 —.

  本发明提供了一种用于芳香族聚酯的改性剂，可以增强芳香族聚酯的熔融流动性，而不明显降低芳香族聚酯的耐热性，以及包括该改性剂的芳香族聚酯树脂组合物。本发明涉及一种用于芳香族聚酯的改性剂，包括多羟基酚残基和芳香族多羧酸、酸卤或其酸酐残基，该改性剂包括具有以下结构的材料：第一残基，选择自由式(I)所代表的二价残基：—Ar—W1x—Ar—和自由式(II)所代表的：—Ar—，第一残基与选择自由式(III)所代表的单价残基：和自由式(IV)所代表的单价残基：—O—C(O)—R7—的两个相同或不同的第二残基结合。
• Epoxy resin composition, cured article thereof, novel epoxy resin, novel phenol compound, and process for preparing the same
  申请人：DAINIPPON INK AND CHEMICALS, INC.

  公开号：EP1275673A2

  公开（公告）日：2003-01-15

  The present invention relates to an epoxy resin composition a cure article thereof, a novel epoxy resin used therein, a polyhydric phenol compound suited for used as an intermediate thereof, and a process for preparing the same. One of the objects to be achieved by the present invention is to exert the heat resistance, the moisture resistance, the dielectric performances and the flame-resistant effect required of electric or electronic materials such as semiconductor encapsulating materials and varnishes for circuit boards in the epoxy resin composition.

  本发明涉及一种环氧树脂组合物及其固化物、一种用于其中的新型环氧树脂、一种适合用作其中间体的多羟基苯酚化合物以及制备该组合物的工艺。本发明要达到的目的之一是在环氧树脂组合物中发挥电气或电子材料（如半导体封装材料和电路板用清漆）所需的耐热性、防潮性、介电性能和阻燃效果。