3,4,6-trifluorophthalic anhydride | 130129-51-0

• 分子结构分类: 有机化合物 - 有机杂环化合物 - 苯并呋喃
• 英文名称: 3,4,6-trifluorophthalic anhydride
• 英文别名: 4,5,7-trifluoro-2-benzofuran-1,3-dione
• CAS: 130129-51-0
• 化学式: C₈HF₃O₃
• 分子量: 202.089
• InChiKey: XQINKQVFUASLEF-UHFFFAOYSA-N

物化性质

• 沸点：
  322.9±42.0 °C(Predicted)
• 密度：
  1.754±0.06 g/cm3(Predicted)

计算性质

• 辛醇/水分配系数(LogP)：
  1.6
• 重原子数：
  14
• 可旋转键数：
  0
• 环数：
  2.0
• sp3杂化的碳原子比例：
  0.0
• 拓扑面积：
  43.4
• 氢给体数：
  0
• 氢受体数：
  6

反应信息

• 作为产物：
  描述：

  3,4,6-trifluorophthalic acid 以 正己烷 为溶剂， 生成 3,4,6-trifluorophthalic anhydride
  参考文献：
  名称：

  Preparation of 2,4,5-trifluorobenzoic acid by decarboxylation of

  摘要：

  已经发现，通过在极性无质子溶剂中加热，可以使3,4,6-三氟苯酐脱羧，生成2,4,5-三氟苯甲酸。

  公开号：

  US04935541A1

文献信息

• Process for the preparation of 3,4,6-trifluorophthalic acid and the
  申请人：Hoechst Aktiengesellschaft

  公开号：US05200556A1

  公开（公告）日：1993-04-06

  Process for the preparation of 3,4,6-tetrafluorophthalic acid of the formula (1) ##STR1## or the anhydride thereof in good yields and in an advantageous manner, by dehalogenating tetrafluorophthalic anhydride of the formula (2) ##STR2## or tetrafluorophthalic acid in aqueous-alkaline medium using zinc at temperatures of approximately 20.degree. C. to approximately 160.degree. C. and, if appropriate, converting the resulting 3,4,6-trifluorophthalic acid into the anhydride in a known manner by dehydrating it.

  制备式（1）的3,4,6-四氟邻苯二甲酸或其酐的过程，包括通过在水碱性介质中使用锌，在约20°C到约160°C的温度下，脱卤四氟邻苯二甲酸酐式（2）##STR2##或四氟邻苯二甲酸，以良好的产率和有利的方式进行反应。如有必要，可以通过脱水将产生的3,4,6-三氟邻苯二甲酸转化为其酐，以已知的方法进行。
• PRODUCTION METHOD OF HALOGEN-SUBSTITUTED PHTHALIDE
  申请人：Hagiya Koji

  公开号：US20120142946A1

  公开（公告）日：2012-06-07

  Disclosed is a method for producing a halogen-substituted phthalide, which includes a reaction step of reacting a halogen-substituted phthalic anhydride with sodium borohydride.

  本发明公开了一种制备卤代邻苯二酸酐的方法，其中包括将卤代邻苯二酸酐与硼氢化钠反应的反应步骤。
• Preparation of 2,4,5-trifluorobenzoic acid by decarboxylation of 3,4,6-trifluorophthalic anhydride
  申请人：OCCIDENTAL CHEMICAL CORPORATION

  公开号：EP0431294A2

  公开（公告）日：1991-06-12

  It has been discovered that 3,4,6-trifluorophthalic anhydride may be decarboxylated by heating in a polar aprotic solvent to yield 2,4,5-trifluorobenzoic acid.

  研究发现，3,4,6-三氟邻苯二甲酸酐可在极性壬烷溶剂中加热脱羧，生成 2,4,5-三氟苯甲酸。
• Method and apparatus for production of fluorine-containing polyimide film
  申请人：——

  公开号：US20040234686A1

  公开（公告）日：2004-11-25

  A method for producing a fluorine-containing polyimide film excelling in heat resistance, resistance to chemicals, water repellency, dielectric properties, electrical properties, and optical properties and a spin coater suitable for the method are to be provided. A method for the production of a fluorine-containing polyimide film which comprises forming a coating film of a fluorine-containing polyimide precursor in an atmosphere having a relative humidity thereof adjusted to a level of not more than 50 RH % and then subjecting the fluorine-containing polyimide precursor to heat treatment thereby forming a fluorine-containing polyimide film is provided. By adjusting the relative humidity in accordance with this method, the fluorine-containing polyimide precursor can be prevented from being decomposed by the absorption of moisture and consequently prevent effectively the fluorine-containing polyimide film from forming piriform spots and scratches. Further, by forming the coating film while keeping the coating film sprayed with a gas particularly during the course of spin coating thereby giving rise to a layer of air flow on the coating film, misty substances of the coating solution generated within the spin coater can be prevented from adhering again to the coating film and consequently ensure the production of a coating film of uniform quality. This formation of the layer of air flow can be facilitated by providing the spin coater with a lid and furnishing the lid with a gas feed port.

  本发明将提供一种生产耐热性、耐化学性、防水性、介电性能、电性能和光学性能优异的含氟聚酰亚胺薄膜的方法，以及一种适用于该方法的旋涂机。本发明提供了一种生产含氟聚酰亚胺薄膜的方法，该方法包括在相对湿度调节至不超过 50 RH % 的气氛中形成含氟聚酰亚胺前体涂膜，然后对含氟聚酰亚胺前体进行热处理，从而形成含氟聚酰亚胺薄膜。按照这种方法调节相对湿度，可以防止含氟聚酰亚胺前体因吸湿而分解，从而有效防止含氟聚酰亚胺薄膜形成盗形斑和划痕。此外，在形成涂膜的同时，特别是在旋涂过程中保持涂膜喷有气体，从而在涂膜上形成气流层，这样就可以防止旋涂机内产生的涂膜溶液中的雾状物质再次附着在涂膜上，从而确保生产出质量均匀的涂膜。通过在旋涂机上安装盖子并在盖子上安装进气口，可以促进气流层的形成。
• PRODUCTION METHOD OF TRI- OR TETRAHALOGEN-SUBSTITUTED PHTHALIDE
  申请人：Sumitomo Chemical Company, Limited

  公开号：EP2433933B1

  公开（公告）日：2019-05-08