2,3,4,5-四溴甲苯 | 101421-20-9

• 分子结构分类: 有机化合物 - 苯类化合物 - 苯和取代衍生物
• 中文名称: 2,3,4,5-四溴甲苯
• 英文名称: 2,3,4,5-tetrabromotoluene
• 英文别名: 2,3,4,5-Tetrabrom-toluol；1,2,3,4-Tetrabromo-5-methylbenzene
• CAS: 101421-20-9
• 化学式: C₇H₄Br₄
• 分子量: 407.725
• InChiKey: ZHMURHNGRUXDMO-UHFFFAOYSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  5.1
• 重原子数：
  11
• 可旋转键数：
  0
• 环数：
  1.0
• sp3杂化的碳原子比例：
  0.14
• 拓扑面积：
  0
• 氢给体数：
  0
• 氢受体数：
  0

反应信息

• 作为反应物：
  描述：

  2,3,4,5-四溴甲苯 在 硝酸 、 溶剂黄146 、 锌 作用下， 生成 methyl-1,2,5-tribromobenzene
  参考文献：
  名称：

  Qvist, Acta Academiae Aboensis, Series B: Mathematica et Physica, 1939, vol. 12, # 1, p. 3,11

  摘要：

  DOI：
• 作为产物：
  描述：

  1,2,3-三溴-5-甲基苯 在 四氯化碳 、 溴 、 碘 、 铁粉 作用下， 生成 2,3,4,5-四溴甲苯
  参考文献：
  名称：

  Qvist, Acta Academiae Aboensis, Series B: Mathematica et Physica, 1939, vol. 12, # 1, p. 3,11

  摘要：

  DOI：

文献信息

• Regioselectivity of reductive debromination of substituted pentabromobenzenes with sodium tert-butoxide in DMSO
  作者：V. N. Shishkin、I. V. Tarasova、K. P. Butin

  DOI：10.1007/s11172-006-0126-1

  日期：2005.10

  The regioselectivity of reductive debromination of substituted pentabromobenzenes C6Br5X (X = NH2, OMe, Me, H, Cl, F, and NO2) under the action of ButONa in DMSO containing ButOH has been studied. The reaction followed the halophilic mechanism via carbanions.

  研究了在含有 ButOH 的 DMSO 中，在 ButONa 的作用下，取代的五溴苯 C6Br5X（X = NH2、OMe、Me、H、Cl、F 和 NO2）还原脱溴的区域选择性。该反应通过碳负离子遵循嗜盐机制。
• [EN] SYNTHESIS OF AROMATIC POLYHALOGENATED HALOMETHYL COMPOUNDS<br/>[FR] SYNTHESE DE COMPOSES HALOMETHYLE POLYHALOGENES AROMATIQUES
  申请人：BROMINE COMPOUNDS LTD

  公开号：WO2006008738A1

  公开（公告）日：2006-01-26

  The present invention discloses a process for the preparation of highly pure Pentabromobenzyl bromide, PBB-Br, wherein the benzylic bromination reaction is carried out in a suitable organic solvent in the presence of water and wherein the reaction temperature is such that it is sufficient to activate the initiator but not high enough to consume a substantial amount thereof.

  本发明揭示了一种制备高纯度五溴苯基溴化物（Pentabromobenzyl bromide, PBB-Br）的过程，其中在适当的有机溶剂中，在水的存在下进行苄溴化反应，反应温度足以激活引发剂但不足以消耗大量引发剂。
• “Conjugate” Substitution of Hydrogen in the Methyl Group of Pentabromotoluene in the Presence of Strong Bases
  作者：V. N. Shishkin、S. S. Vakaeva、K. P. Butin

  DOI：10.1007/s11176-005-0404-x

  日期：2005.8

  The reactions of pentabromotoluene with i-PrONa or t-BuONa in pyridine give N-(pentabromobenzyl)pyridinium bromide and a mixture of isomeric tetrabromotoluenes. In the presence of bromine or carbon tetrabromide, the reductive debromination is blocked, and the reactions involve exclusively substitution of hydrogen in the methyl group of pentabromotoluene by the pyridinium residue.

  五溴甲苯与 i-PrONa 或 t-BuONa 在吡啶中发生反应，生成 N-(五溴苄基)溴化吡啶和异构四溴甲苯混合物。在溴或四溴化碳存在的情况下，还原脱溴反应受阻，反应只涉及五溴甲苯甲基中的氢被吡啶残基取代。
• Silsesquioxane derivative having functional group
  申请人：Ito Kenya

  公开号：US20060089504A1

  公开（公告）日：2006-04-27

  A conventional silsesquioxane derivative has the problems that the functional groups are restricted and the chemical structure is not readily controlled and that it is expensive. The present inventors have developed a process for producing a silsesquioxane derivative at a high yield by a simple process in order to solve such problems. The novel silsesquioxane derivative according to the present invention is controlled in a structure thereof and has a functional group, which is excellent in reactivity with a target compound, to be modified. The present invention relates to a production process for a silsesquioxane derivative represented by Formula (2), characterized by using a silicon compound represented by Formula (1). In Formula (1) and Formula (2), R is a group selected from hydrogen, alkyl, aryl and arylalkyl; M is a monovalent alkaline metal atom; at least one of Y is a group represented by Formula (3), and the remainder of Y is hydrogen; R 1 and R 2 in Formula (3) represent the same group as defined for R; and Z is a functional group or a group having a functional group.

  一种传统的六硅氧烷衍生物存在以下问题：功能基团受限、化学结构不易控制且价格昂贵。本发明人已经开发出一种通过简单工艺高产率生产六硅氧烷衍生物的方法，以解决这些问题。根据本发明的新型六硅氧烷衍生物在结构上受控，并具有与目标化合物反应活性优异的功能基团，可进行改性。本发明涉及一种生产六硅氧烷衍生物的方法，其特征在于使用化学式（1）所代表的硅化合物。在化学式（1）和化学式（2）中，R是从氢、烷基、芳基和芳基烷基中选择的基团；M是一价碱金属原子；至少一个Y是由化学式（3）表示的基团，其余的Y为氢；化学式（3）中的R1和R2代表与R定义相同的基团；Z是功能基团或具有功能基团的基团。
• Silsesquioxane derivative and process for producing the same
  申请人：Yoshida Kazuhiro

  公开号：US20060052623A1

  公开（公告）日：2006-03-09

  The PSQ silsesquioxane derivative of the invention is represented by Formula (1), and it may be utilized as additives to ordinary organic polymers for improving the flame retardancy, heat resistance, weather resistance, light resistance, electric insulating property, surface property, hardness, mechanical strength and chemical resistance thereof. In Formula (1), R is hydrogen, alkyl, aryl or arylalkyl; at least one Y is a group represented by Formula (2) and the other Y is hydrogen; in Formula (2), R 1 and R 2 are a group independently defined similarly to R; and Z is preferably a functional group, or a group having a functional group.

  该发明的PSQ硅氧烷衍生物由化学式（1）表示，可用作普通有机聚合物的添加剂，以改善其阻燃性、耐热性、耐候性、耐光性、电绝缘性、表面性能、硬度、机械强度和化学稳定性。在化学式（1）中，R为氢、烷基、芳基或芳基烷基；至少一个Y是由化学式（2）表示的基团，另一个Y为氢；在化学式（2）中，R1和R2是独立定义的与R类似的基团；Z最好是一个功能基团，或具有功能基团的基团。