Benzene-1,2,4,5-tetracarboxylic acid 1-ethyl ester | 128915-95-7

• 分子结构分类: 有机化合物 - 苯类化合物 - 苯和取代衍生物
• 英文名称: Benzene-1,2,4,5-tetracarboxylic acid 1-ethyl ester
• 英文别名: 5-Ethoxycarbonylbenzene-1,2,4-tricarboxylic acid
• CAS: 128915-95-7
• 化学式: C₁₂H₁₀O₈
• 分子量: 282.207
• InChiKey: XUEFENNZGKZRKU-UHFFFAOYSA-N

物化性质

• 沸点：
  561.2±50.0 °C(Predicted)
• 密度：
  1.555±0.06 g/cm3(Predicted)

计算性质

• 辛醇/水分配系数(LogP)：
  0.7
• 重原子数：
  20
• 可旋转键数：
  6
• 环数：
  1.0
• sp3杂化的碳原子比例：
  0.17
• 拓扑面积：
  138
• 氢给体数：
  3
• 氢受体数：
  8

反应信息

• 作为产物：
  描述：

  乙醇 、 均苯四甲酸二酐 在 三乙胺 、 水 、 溶剂黄146 作用下， 以 二氯甲烷 为溶剂， 生成 Benzene-1,2,4,5-tetracarboxylic acid 1-ethyl ester
  参考文献：
  名称：

  均苯四酸的酯。第一部分：非手性醇的酯：部分和混合的均苯四甲酸酯酯的区域选择性合成，使用原甲酸酯酯对均苯四甲酸酯体系进行定量酯化的酯交换反应机理以及邻苯二甲酸酯二酸酯取代模式的简便合成

  摘要：

  温和的条件和可逆酸酐的形成允许在酯化过程中对均苯四甲酸二酐（PMDA，苯-1,2,4,5-四羧酸二酐）的四个当量羰基进行相对区分，从而导致区域选择性方法产生广泛的部分或全部酯化的产品或在不同位置带有不同酯化基团的产品。均苯四甲酸单酯酸酐在二氯甲烷/三乙胺中由1当量的醇有效形成。在相同条件下，两个不同可以使醇顺序地反应。用2当量的醇，获得通常的间位和对位二酯混合物，通过与HOAc结晶分离。间苯二甲酸和对二苄基均苯四酸酯通过进一步酯化然后氢解而充当其他二酯的区域特异性来源。发现回流的原甲酸三酯能定量在自催化条件下均苯四甲酸体系的酯化; 与预先存在的酯进行的少量酯交换（占总产物的0-5％）归因于可逆酸酐的形成。为了用醇进行一般的酯化反应，使用草酰氯获得了部分酯酰氯。均苯四甲酸三酯在蒸馏时提供邻二酯酸酐，从而提供了进入该系统中最新颖的邻位取代模式的容易途径。通过选择性皂化或通过预先引入一个苄基酯取

  DOI：

  10.1021/jo800543w

文献信息

• VARNISH USING 2-PHENYL-4,4'-DIAMINODIPHENYL ETHER, IMIDE RESIN COMPOSITION EXHIBITING EXCELLENT MOLDABILITY, CURED RESIN MOLDED ARTICLE HAVING EXCELLENT BREAKING ELONGATION, PREPREG USING SAME, IMIDE PREPREG, AND FIBER-REINFORCED MATERIAL EXHIBITING EXCELLENT HEAT RESISTANCE AND MECHANICAL STRENGTH
  申请人：Kaneka Corporation

  公开号：EP3144338A1

  公开（公告）日：2017-03-22

  Provided is a varnish including 1 to 500 parts by weight of an aromatic tetracarboxylic acid diester (A) represented by General Formula (1), 1 to 450 parts by weight of 2-phenyl-4,4'-diaminodiphenyl ether (B), 1 to 100 parts by weight of a 4-(2-phenylethynyl)phthalic acid monoester (C) represented by General Formula (2), and 100 parts by weight of an organic solvent having a boiling point of 150°C or less at 1 atmosphere or a mixture of two or more of the organic solvents (D). The components (A), (B), and (C) are dissolved in the varnish. (In the formula, R1 is an aromatic tetracarboxylic acid diester residue; R2 and R3 are the same or different and are an aliphatic organic group or an aromatic organic group.) (In the formula, R4 and R5 are a hydrogen atom, an aliphatic organic group, or an aromatic organic group.)

  本发明提供了一种清漆，包括 1 至 500 份（重量）由通式（1）表示的芳香族四羧酸二酯（A）、 1 至 450 份（重量）2-苯基-4,4'-二氨基二苯醚（B）、1 至 100 份（重量）由通式（2）表示的 4-(2-苯基乙炔基)邻苯二甲酸单酯（C）和 100 份（重量）具有沸点的有机溶剂、1 至 100 份（重量）通式（2）代表的 4-(2-苯基乙炔基)邻苯二甲酸单酯 (C)，以及 100 份（重量）在 1 个大气压下沸点为 150°C 或以下的有机溶剂或两种或两种以上有机溶剂的混合物 (D)。将组分（A）、（B）和（C）溶解在清漆中。 (式中，R1 为芳香族四羧酸二酯残基；R2 和 R3 相同或不同，且为脂肪族有机基团或芳香族有机基团)。 (式中，R4 和 R5 为氢原子、脂肪族有机基团或芳香族有机基团）。
• Process for producing aromatic polyimides
  申请人：RHODIA OPERATIONS

  公开号：US10647814B2

  公开（公告）日：2020-05-12

  The invention relates to a process for producing an aromatic polyimide, comprising the following steps: (a) preparing one or more salt(s) by reacting one or more aromatic tetracarboxylic acid(s) in the solid state and one or more diamine(s), optionally in the presence of one or more chain limiter(s), in the presence of one or more binder(s), comprising one or more organic liquid(s), in an amount of from 1% to 25% by weight relative to the total weight of the aromatic tetracarboxylic acid(s), of the diamine(s) and of the optional chain limiter(s), then; (b) polymerising the salt(s) obtained in step (a).

  本发明涉及一种生产芳香族聚酰亚胺的工艺，包括以下步骤：(a) 将一种或多种固态芳香族四羧酸与一种或多种二胺反应，制备一种或多种盐，该反应可选择在一种或多种限链剂存在的情况下进行，反应时存在一种或多种粘合剂，其中包括一种或多种有机液体，其用量为芳香族四羧酸、二胺和任选限链剂总重量的 1%至 25%（按重量计），然后；(b) 聚合步骤(a)中得到的盐。
• Artem'eva, V. N.; Chupans, P. I.; Smirnova, E. A., Journal of applied chemistry of the USSR, 1990, vol. 63, # 3, p. 622 - 626
  作者：Artem'eva, V. N.、Chupans, P. I.、Smirnova, E. A.、Denisov, V. M.、Kukarkin, E. N.、Kudryavtsev, V. V.

  DOI：——

  日期：——
• VARNISH INCLUDING 2-PHENYL-4,4'-DIAMINODIPHENYL ETHER, IMIDE RESIN COMPOSITION HAVING EXCELLENT MOLDABILITY, CURED RESIN MOLDED ARTICLE HAVING EXCELLENT BREAKING ELONGATION, PREPREG THEREOF, IMIDE PREPREG THEREOF, AND FIBER-REINFORCED MATERIAL THEREOF HAVING HIGH HEAT RESISTANCE AND EXCELLENT MECHANICAL STRENGTH
  申请人：Kaneka Corporation

  公开号：US20170152399A1

  公开（公告）日：2017-06-01

  Provided is a varnish including 1 to 500 parts by weight of an aromatic tetracarboxylic acid diester (A) represented by General Formula (1), 1 to 450 parts by weight of 2-phenyl-4,4′-diaminodiphenyl ether (B), 1 to 100 parts by weight of a 4-(2-phenylethynyl)phthalic acid monoester (C) represented by General Formula (2), and 100 parts by weight of an organic solvent having a boiling point of 150° C. or less at 1 atmosphere or a mixture of two or more of the organic solvents (D). The components (A), (B), and (C) are dissolved in the varnish. (In the formula, R 1 is an aromatic tetracarboxylic acid diester residue; R 2 and R 3 are the same or different and are an aliphatic organic group or an aromatic organic group.) (In the formula, R 4 and R 5 are a hydrogen atom, an aliphatic organic group, or an aromatic organic group.)
• PROCESS FOR PRODUCING AROMATIC POLYIMIDES
  申请人：RHODIA OPERATIONS

  公开号：US20180355109A1

  公开（公告）日：2018-12-13

  The invention relates to a process for producing aromatic polyimides, comprising the following steps: (a) preparation of one or more solid salt(s) by reacting one or more aromatic tetracarboxylic acid(s) and one or more diamine(s) according to a mole ratio ranging from 0.95 to 1.05; (b) drying of the solid salt(s), (c) addition, to the dry salt resulting from step (b), of one or more compound(s) (C) comprising one or more group(s) chosen from a carboxylic acid group, an anhydride group, an ester group and an acyl chloride group; (d) solid-state polymerization of said solid salt(s) in the presence of the compound(s) (C).