Thiophen-2,4-dicarbonsaeure-dimethylester | 6520-81-6

• 分子结构分类: 有机化合物 - 有机杂环化合物 - 噻吩类
• 英文名称: Thiophen-2,4-dicarbonsaeure-dimethylester
• 英文别名: Thiophen-dicarbonsaeure-(2,4)-dimethylester；Dimethyl thiophene-2,4-dicarboxylate
• CAS: 6520-81-6
• 化学式: C₈H₈O₄S
• mdl: MFCD24386965
• 分子量: 200.215
• InChiKey: GUYGZVVCZMIUTA-UHFFFAOYSA-N

物化性质

• 熔点：
  123-124 °C
• 沸点：
  284.8±20.0 °C(Predicted)
• 密度：
  1.294±0.06 g/cm3(Predicted)

计算性质

• 辛醇/水分配系数(LogP)：
  1.6
• 重原子数：
  13
• 可旋转键数：
  4
• 环数：
  1.0
• sp3杂化的碳原子比例：
  0.25
• 拓扑面积：
  80.8
• 氢给体数：
  0
• 氢受体数：
  5

安全信息

• 海关编码：
  2934999090

反应信息

• 作为产物：
  描述：

  γ-Formyl-α-ketoglutarsaeure-diaethylester-diaethylketal 在 硫酸 、 phosphorous (V) sulfide 、 甲苯 作用下， 生成 Thiophen-2,4-dicarbonsaeure-dimethylester
  参考文献：
  名称：

  2,3-Furan, Pyrrole and Thiophenedicarboxylic Acids

  摘要：

  DOI：

  10.1021/ja01620a031

文献信息

• 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。
• Process and catalyst for polymerization of olefins
  申请人：Asahi Kasei Kogyo Kabushiki Kaisha

  公开号：EP0052471A1

  公开（公告）日：1982-05-26

  A process for polymerizing an olefin which comprises contacting the olefin at a temperature of about 10°C to about 100°C with a catalyst comprising a slurry component [A] and. an organometallic component [B], the component [A] being obtained by reacting (1) a slurry reaction mixture produced by reacting one mol of (i) a hydrocarbon-soluble organomagnesium component of the general formula wherein a, p, q, r and s each independently is 0 or a number greater than 0, B is a number greater than 1, m is the valence of M, M is a metal of the 1st to 3rd groups of the Periodic Table, R' and R2 each independently is a hydrocarbon group having 1 to 20 carbon atoms, X and Y each independently is a hydrogen atom, a halogen atom, OR3, OSiR4R5R6, NR7R8 or SR9 wherein R3, R4, R5, R6, R7 and R8 each independently is a hydrogen atom or a hydrocarbon group having 1 to 20 carbon atoms and R9 is a hydrocarbon group having 1 to 20 carbon atoms, (or of the reaction product of with at least one electron donor selected from the group consisting of ethers, thioethers, ketones, aldehydes, carboxylic acids or derivatives thereof, alcohols, thioalcohols and amines) with 0.1 to 10 mols of (ii) a chlorosilane compound of the formula wherein R10 is a hydrocarbon group having 1 to20 carbon atoms, 0 < a ≤ 2 and b is a number greater than 1 at a temperature of about 20°C to about 150°C, with (2) a titanium compound of the formula wherein R" is a hydrocarbon group having 1 to 20 carbon atoms, Z is a halogen atom and 0 ≤ n ≤ 4. and (3) a nitrogen or sulfur-containing heterocyclic carboxylic acid ester or a hydrocarbyl carboxylic acid ester, the mol ratio of (2) the titanium compound: (3) the carboxylic acid ester being at least 0.3.

  一种使烯烃聚合的工艺，它包括在约10℃至约100℃的温度下使烯烃与由浆料组分[A]和有机金属组分[B]组成的催化剂接触，组分[A]是通过以下反应得到的：(1)由1摩尔(i)通式为烃溶性的有机镁组分反应生成的浆料反应混合物；(ii)由1摩尔(iii)通式为烃溶性的有机镁组分反应生成的浆料反应混合物。 其中 a、p、q、r 和 s 各自独立地为 0 或大于 0 的数值、 B 是大于 1 的数值 m 是 M 的化合价、 M 是元素周期表中第 1 至第 3 族的金属、 R' 和 R2 各自独立地为具有 1 至 20 个碳原子的烃基、 X 和 Y 各自独立地为氢原子、卤素原子、OR3、OSiR4R5R6、NR7R8 或 SR9，其中 R3、R4、R5、R6、R7 和 R8 各自独立地为氢原子或具有 1 至 20 个碳原子的烃基，R9 为具有 1 至 20 个碳原子的烃基、 (或其与至少一个选自醚、硫醚、酮、醛、羧酸或其衍生物、醇、硫醇和胺组成的组的电子供体的反应产物)与 0.1 至 10 摩尔 (ii) 式中的氯硅烷化合物的反应产物。 其中 R10 是具有 1 至 20 个碳原子的烃基、 0 < a ≤ 2 和 b 是大于 1 的数字，温度约为 20°C 至约 150°C，(2) 式中的钛化合物 其中 R" 是具有 1 至 20 个碳原子的烃基、 Z 是卤素原子 0 ≤ n ≤ 4. 和 (3) 含氮或硫的杂环羧酸酯或烃基羧酸酯，(2) 钛化合物：(3) 羧酸酯的摩尔比至少为 0.3。
• Process for preparing polyolefins
  申请人：Nippon Petrochemicals Co., Ltd.

  公开号：EP0267794A2

  公开（公告）日：1988-05-18

  A process for preparing a polyolefin by homopolymerizing or copolymerizing an olefin or olefins using a catalyst comprising a solid catalyst component and an organometallic compound, said solid catalyst component being obtained by contacting at least a titanium compound and/or a vanadium compound with a solid material (a), said solid material (a) being obtained by contacting the following components (1), (2) and (3) with one another: (1) a silicon oxide and/or an aluminum oxide, (2) a magnesium halide, and (3) an organometallic compound.

  一种使用由固体催化剂组分和有机金属化合物组成的催化剂，通过均聚或共聚一种或多种烯烃制备聚烯烃的工艺，所述固体催化剂组分通过将至少一种钛化合物和/或钒化合物与固体材料（a）接触而获得，所述固体材料（a）通过将以下组分（1）、（2）和（3）相互接触而获得：（1）氧化硅和/或氧化铝，（2）卤化镁，和（3）有机金属化合物。
• AROMATIC POLYESTER
  申请人：Muroran Institute of Technology

  公开号：EP2479203A1

  公开（公告）日：2012-07-25

  The present invention provides an aromatic polyester which is substantially free from the occurrence of coloration and retains significantly high transparency even after being thermally processed at high temperature and which has high flowability. The aromatic polyester contains a polyhydric phenol residue and a residue of any one of aromatic polycarboxylic acid, halide thereof, and anhydride thereof, and terminals of the aromatic polyester have a structure represented by the formula -C(O)-R. The aromatic polyester has an end-capping rate of 90% or higher and a weight average molecular weight (Mw) ranging from 3,000 to 1,000,000.

  本发明提供了一种芳香族聚酯，该聚酯基本上不会发生着色，即使在高温热加工后仍能保持明显的高透明度，并且具有高流动性。芳香族聚酯含有多羟基苯酚残留物和芳香族多羧酸、其卤化物和其酸酐中任意一种的残留物，芳香族聚酯的端基具有式 -C(O)-R 所代表的结构。芳香族聚酯的端盖率为 90% 或更高，重量平均分子量（Mw）为 3,000 至 1,000,000 之间。
• Hopff; v. d. Crone, Chimia, 1959, vol. 13, p. 107
  作者：Hopff、v. d. Crone

  DOI：——

  日期：——