tetrachloro-1,4-dioxin | 133349-02-7

• 分子结构分类: 有机化合物 - 有机杂环化合物 - 二恶英
• 英文名称: tetrachloro-1,4-dioxin
• 英文别名: Tetrachlorodioxin；2,3,5,6-tetrachloro-1,4-dioxine
• CAS: 133349-02-7
• 化学式: C₄Cl₄O₂
• 分子量: 221.855
• InChiKey: OBMURFQEUFHVSY-UHFFFAOYSA-N

物化性质

• 沸点：
  165.6±40.0 °C(Predicted)
• 密度：
  1.82±0.1 g/cm3(Predicted)

计算性质

• 辛醇/水分配系数(LogP)：
  3.6
• 重原子数：
  10
• 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：
  18.5
• 氢给体数：
  0
• 氢受体数：
  2

反应信息

• 作为反应物：
  描述：

  tetrachloro-1,4-dioxin 在 水 、 氧气 作用下， 反应 72.0h， 生成 草酸 、 alkaline earth salt of/the/ methylsulfuric acid
  参考文献：
  名称：

  Perhalodioxins and perhalodihydrodioxins

  摘要：

  Two perhalo-1,4-dioxins, representatives of a previously unknown class of compounds, have been synthesized and shown to exhibit unusual reactivity. In particular, reaction with oxygen is spontaneous and exothermic, and radical-catalyzed homopolymerization will proceed through a fluorinated double bond. Representatives of the perhalo-2,3-dihydro-1,4-dioxin class have also been prepared and found to have reactivity in general intermediate to that of the perhalodioxoles and acyclic trifluorovinyl ethers. Computational studies of the two systems established that introduction of the first double bond raises the energy substantially, while the second double bond results in a near-planar ring with dramatically increased energy content.

  DOI：

  10.1021/jo00012a026
• 作为产物：
  描述：

  heptachloro-[1,4]dioxane 、 alkaline earth salt of/the/ methylsulfuric acid 在 sodium hydroxide 作用下， 以 甲醇 、 水 为溶剂， 反应 0.5h， 生成 tetrachloro-1,4-dioxin 、 hexachloro-2,3-dihydro-1,4-dioxin
  参考文献：
  名称：

  Perhalodioxins and perhalodihydrodioxins

  摘要：

  Two perhalo-1,4-dioxins, representatives of a previously unknown class of compounds, have been synthesized and shown to exhibit unusual reactivity. In particular, reaction with oxygen is spontaneous and exothermic, and radical-catalyzed homopolymerization will proceed through a fluorinated double bond. Representatives of the perhalo-2,3-dihydro-1,4-dioxin class have also been prepared and found to have reactivity in general intermediate to that of the perhalodioxoles and acyclic trifluorovinyl ethers. Computational studies of the two systems established that introduction of the first double bond raises the energy substantially, while the second double bond results in a near-planar ring with dramatically increased energy content.

  DOI：

  10.1021/jo00012a026

文献信息

• A process for preferentially removing more planar molecules from mixtures with less planar molecules
  申请人：ROHM AND HAAS COMPANY

  公开号：EP0025919A1

  公开（公告）日：1981-04-01

  In a process for preferentially removing more planar molecules, such as divinylbenzene or para-dioxin molecules, from mixtures of more planar and less planar molecules, such as commercial divinylbenzenes containing non-planar ethylvinylbenzene, or commercial 2,4,5-T herbicide containing non-planar 2,4,5-trichlorophenoxyacetic acid the mixture is contacted with particulate adsorbent which is the product of controlled thermal degradation at a temperature of at least 500°C of macroporous synthetic polymer containing mancro- pores in the range 50 to 100,000 Angstroms in average critical dimension and a carbon fixing moiety and derived from one or more ethylenically unsaturated monomers, or monomers which can be condensed to yield macroporous polymers, or mixtures thereof, until planar molecules have been selectively adsorbed, and subsequently separating the adsorbent from the mixture Suitable adsorbents are disclosed in detail in U.S. Patent 4040900 and British Patent 1543376.

  在从平面分子较多和平面分子较少的混合物（如含有非平面乙烯基苯的商用二乙烯基苯，或含有非平面 2,4,5-三氯苯氧乙酸的商用 2,4.5-T 除草剂）中优先去除平面分子较多的分子（如二乙烯基苯或对二噁英分子）的工艺中，混合物与微粒吸附剂接触、将混合物与微粒吸附剂接触，微粒吸附剂是大孔合成聚合物在至少 500°C 的温度下受控热降解的产物，大孔合成聚合物的平均临界孔径在 50 到 100、吸附剂是在至少 500°C 的温度下受控热降解大孔合成聚合物的产物，该聚合物含有平均临界尺寸在 50 至 100,000 埃范围内的微孔和碳固定分子，由一种或多种乙烯不饱和单体或可缩合生成大孔聚合物的单体或其混合物衍生而来，直到平面分子被选择性吸附，然后将吸附剂从混合物中分离出来。美国专利 4040900 和英国专利 1543376 中详细介绍了合适的吸附剂。
• Process for the preparation of 2,4-dichlorophenoxyacetic acid
  申请人：ENICHEM AGRICOLTURA S.p.A.

  公开号：EP0509518A1

  公开（公告）日：1992-10-21

  A process is described for the preparation of 2,4-dichlorophenoxyacetic acid consisting of the chlorination of phenoxyacetic acid with chlorine, at temperatures from 0°C to the boiling point of the reaction mixture, in a reaction medium composed of acetic acid.

  描述了一种制备 2,4-二氯苯氧乙酸的工艺，包括在由乙酸组成的反应介质中，在 0°C 至反应混合物沸点的温度范围内，用氯对苯氧乙酸进行氯化。
• KRESPAN, CARL G.;DIXON, DAVID A., J. ORG. CHEM., 56,(1991) N2, C. 3915-3923
  作者：KRESPAN, CARL G.、DIXON, DAVID A.

  DOI：——

  日期：——
• SYSTEM FOR PROVIDING POWDER COATED RECONSTITUTED CELLULOSIC SUBSTRATE
  申请人：Orica Australia Pty Ltd

  公开号：EP1781750A1

  公开（公告）日：2007-05-09
• System for Providing Powder Coated Reconstituted Cellulosic Substrate
  申请人：Bruce Alexander Mark

  公开号：US20090004496A1

  公开（公告）日：2009-01-01

  A process for preparing a powder coated reconstituted cellulosic substrate comprising providing a reconstituted cellulosic substrate comprising cellulose based particles and a cured formaldehyde based resin, wherein an inorganic salt is dispersed throughout the substrate; applying a powder coating composition to at least one surface of said substrate; and curing the powder coating composition.