2,5-噻吩二羧酸,3,4-二甲氧基- | 177364-96-4

• 分子结构分类: 有机化合物 - 有机杂环化合物 - 噻吩类
• 中文名称: 2,5-噻吩二羧酸,3,4-二甲氧基-
• 英文名称: 3,4-dimethoxythiophene-2,5-dicarboxylic acid
• 英文别名: 3,4-dimethoxy-thiophene-2,5-dicarboxylic acid；3,4-Dimethoxy-thiophen-2,5-dicarbonsaeure；3,4-Dimethoxy-2,5-thiophenedicarboxylic acid；3,4-dimethoxythiophenedicarboxylic acid
• CAS: 177364-96-4
• 化学式: C₈H₈O₆S
• 分子量: 232.214
• InChiKey: VJPALIAORYSTKL-UHFFFAOYSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  1.3
• 重原子数：
  15
• 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：
  121
• 氢给体数：
  2
• 氢受体数：
  7

反应信息

• 作为反应物：
  描述：

  2,5-噻吩二羧酸,3,4-二甲氧基- 在 喹啉 、 copper chromite 、 对甲苯磺酸 作用下， 以 甲苯 为溶剂， 反应 32.0h， 生成 3,4-di-n-butoxythiophene
  参考文献：
  名称：

  Synthesis and crystal structures of 2,3,12,13-tetraalkoxy-21,23-dithiaporphyrins and 2,3-dialkoxy-21-monothiaporphyrins

  摘要：

  The tetraalkoxy and dialkoxy substituted 21,23-dithiaporphyrins and 21-monothiaporphyrins, respectively, having methoxy, butoxy, octyloxy and dodecyloxy substituents at beta-thiophene carbons were synthesized and characterized. The X-ray structure was solved for tetrabutoxy substituted 21,23-dithiaporphyrin and it exhibited a more planar structure compared with unsubstituted S2TPP, whereas the dimethoxy substituted 21-monothiaporphyrin showed a saddle shaped structure similar to unsubstituted STPPH. (C) 2004 Elsevier Ltd. All rights reserved.

  DOI：

  10.1016/j.tet.2004.09.008
• 作为产物：
  描述：

  diethyl 3,4-dihydroxythiophene-2,5-dicarboxylate disodium salt 在 sodium hydroxide 作用下， 反应 1.5h， 生成 2,5-噻吩二羧酸,3,4-二甲氧基-
  参考文献：
  名称：

  通过曼尼希反应优化3,4-二烷氧基噻吩在2和5位上的取代：空间拥挤，亲电反应性和温度的影响

  摘要：

  已经合成了许多3,4-二烷氧基噻吩化合物，并通过Mannich反应与仲胺。这些反应令人惊讶地给出了在2-和5-位被取代的双-曼尼希碱基以及在2-位被取代的预期的单-曼尼希碱基。优化条件，一步得到对称的bis-2,5-Mannich碱基，两步得到不对称的bis-2,5-Mannich碱基。报道了衍生自3，4-二烷氧基噻吩的几种双（噻吩-2-基甲基）胺，它们的合成在正常和高稀释条件下进行。一些合成还提供了（噻吩-2-基甲基）胺低聚物。通过曼尼希反应在5-位进一步取代双（噻吩-2-基甲基）胺也被证明是成功的。讨论了影响产量和替代模式的因素，以及空间需求的分子模型。

  DOI：

  10.1039/b105476g

文献信息

• 2,5-Diamide-Substituted Five-Membered Heterocycles: Challenging Molecular Synthons
  作者：Chiara Fabbro、Simone Armani、Laure-Elie Carloni、Federica De Leo、Johan Wouters、Davide Bonifazi

  DOI：10.1002/ejoc.201402654

  日期：2014.9

  We describe synthetic routes for preparing previously unknown 2,5-diamide-substituted five-membered heterocycles based on the thiophene, pyrrole, and furan ring systems by exploiting Curtius-like rearrangement reactions. Conformation analysis of the 2,5-diamidothiophene derivatives identified a “closed” conformation, in which the two carbonyl O atoms are in close contact with the thiophene S atom.

  我们描述了基于噻吩、吡咯和呋喃环系统通过利用类库尔蒂斯重排反应制备以前未知的 2,5-二酰胺取代的五元杂环的合成路线。2,5-二氨基噻吩衍生物的构象分析确定了一个“闭合”构象，其中两个羰基 O 原子与噻吩 S 原子紧密接触。
• COSMETIC OR DERMATOLOGICAL COMPOSITION COMPRISING A POLYMER BEARING JUNCTION GROUPS, AND COSMETIC TREATMENT PROCESS
  申请人：Chodorowski-Kimmes Sandrine

  公开号：US20100239509A1

  公开（公告）日：2010-09-23

  The present patent application relates to a cosmetic or dermatological composition comprising, in a cosmetically or dermatologically acceptable medium, a polymer comprising: (a) a polymer backbone that may be obtained by reaction: of a polyol comprising 3 to 6 hydroxyl groups; of a monocarboxylic acid containing 6 to 32 carbon atoms; of a polycarboxylic acid comprising at least two carboxylic groups COOH, and/or of a cyclic anhydride such as a polycarboxylic acid and/or of a lactone comprising at least one carboxylic group COOH; and (b) at least one junction group linked to the said polymer backbone and capable of establishing H bonds with one or more partner junction groups, each pairing of a junction group involving at least three H (hydrogen) bonds. The patent application also concerns a cosmetic treatment process using the said composition.

  本专利申请涉及一种化妆品或皮肤科学组合物，包括在化妆品或皮肤科学上可接受的介质中，包含以下聚合物的组合物：(a) 由以下反应得到的聚合物骨架：含有3至6个羟基的多元醇；含有6至32个碳原子的一元羧酸；至少含有两个羧基COOH的多元羧酸，和/或类似多元羧酸的环酐和/或至少含有一个羧基COOH的内酯；以及(b) 至少一个连接到所述聚合物骨架的连接基团，并能够与一个或多个配对连接基团建立H键，每个连接基团的配对涉及至少三个H（氢）键。该专利申请还涉及使用所述组合物的化妆品处理过程。
• COMPOSITION COMPRISING A POLYCONDENSATE, METHOD OF TREATMENT, POLYCONDENSATE, AND METHOD OF PREPARATION
  申请人：GIUSTINIANI Pascal

  公开号：US20090028807A1

  公开（公告）日：2009-01-29

  The present application relates to a cosmetic or pharmaceutical, in particular lipstick, composition comprising a polycondensate The application also relates to a method of cosmetic treatment using the composition, the polycondensate thus defined and a method of preparing the polycondensate.

  本申请涉及一种化妆品或药用品，特别是口红，包括聚缩酸酯的组合物。该申请还涉及一种使用该组合物进行化妆处理的方法，所述聚缩酸酯的定义以及一种制备聚缩酸酯的方法。
• COSMETIC OR PHARMACEUTICAL COMPOSITION COMPRISING A POLYCONDENSATE, THE SAID POLYCONDENSATE AND METHOD OF COSMETIC TREATMENT
  申请人：Malle Gerard

  公开号：US20100272660A1

  公开（公告）日：2010-10-28

  The present application relates to a cosmetic or pharmaceutical composition comprising a polycondensate capable of being obtained by the reaction of the following monomers alone: of 10 to 30% by weight, relative to the total weight of the polycondensate, of one or more polyols comprising 3 to 6 hydroxyl groups; of 30 to 80% by weight, relative to the total weight of the polycondensate, of one or more linear, branched and/or cyclic, saturated or unsaturated, non-aromatic monocarboxylic acids comprising 6 to 32 carbon atoms; of 1 to 40% by weight, relative to the total weight of the polycondensate, of one or more polycarboxylic acids and/or cyclic anhydrides of such a polycarboxylic acid and/or lactones comprising at least one COOH group; and optionally of 0.1 to 15% by weight, relative to the total weight of the polycondensate, of one or more silicones having a hydroxyl and/or carboxyl functional group. The application also relates to a method of cosmetic treatment using the said composition, and the polycondensate thus defined.

  本申请涉及一种化妆品或药用组合物，包括由以下单体反应而得的聚缩酸酯：相对于聚缩酸酯的总重量，占10至30%的一种或多种含有3至6个羟基的多元醇；占30至80%的一种或多种线性、支链和/或环状、饱和或不饱和、非芳香族的单羧酸，含有6至32个碳原子；占聚缩酸酯总重量的1至40%的一种或多种多羧酸和/或多羧酸的环状酐和/或含有至少一个COOH基团的内酯；以及可选地占聚缩酸酯总重量的0.1至15%的一种或多种硅氧烷，具有羟基和/或羧基官能团。该申请还涉及使用所述组合物进行化妆处理的方法，以及如此定义的聚缩酸酯。
• Process for the preparation of dialkylthiophenes and alkylenedioxythiophenes
  申请人：——

  公开号：US20010034453A1

  公开（公告）日：2001-10-25

  A process for the preparation of dialkoxythiophenes and alkylene-dioxythiophenes in high purity and very good yields by decarboxylation of dialkoxythiophene-dicarboxylic acids or alkylenedioxythiophenedicarboxylic acids, respectively, in solvents that have a higher boiling point than the product and contain no nitrogen bases.

  一种制备高纯度和高产率的二烷氧基噻吩和烷基二氧噻吩的过程，通过分别脱羧二烷氧基噻吩二羧酸或烷基二氧噻吩二羧酸，所用溶剂沸点高于产物且不含氮碱。