4,4′-二巯基二苯乙烯 | 614756-39-7

• 物质功能分类: 化学试剂 - 有机试剂 - 硫醇盐
• 分子结构分类: 有机化合物 - 苯丙烷和聚酮 - 二苯乙烯类
• 中文名称: 4,4′-二巯基二苯乙烯
• 英文名称: trans-4,4'-dimercaptostilbene
• 英文别名: 4,4'-Dimercaptostilbene；4-[(E)-2-(4-sulfanylphenyl)ethenyl]benzenethiol
• CAS: 614756-39-7
• 化学式: C₁₄H₁₂S₂
• mdl: MFCD11656169
• 分子量: 244.381
• InChiKey: FOYJDMJLWTYTCC-OWOJBTEDSA-N

物化性质

• 熔点：
  252-257 °C
• 沸点：
  410.6±34.0 °C(Predicted)
• 密度：
  1.235±0.06 g/cm3(Predicted)

计算性质

• 辛醇/水分配系数(LogP)：
  4.5
• 重原子数：
  16
• 可旋转键数：
  2
• 环数：
  2.0
• sp3杂化的碳原子比例：
  0.0
• 拓扑面积：
  2
• 氢给体数：
  2
• 氢受体数：
  2

安全信息

• 危险品标志：
  Xn,N
• 安全说明：
  S61
• 危险类别码：
  R22,R51/53
• WGK Germany：
  3

反应信息

• 作为产物：
  描述：

  在 甲醇 、 potassium hydroxide 作用下， 以 四氢呋喃 为溶剂， 生成 4,4′-二巯基二苯乙烯
  参考文献：
  名称：

  非凡的自由基清除剂：4-巯基苯甲酸酯

  摘要：

  在过去的十年中，与天然白藜芦醇白藜芦醇相比，开发出更多的活性抗氧化剂和癌症化学预防剂引起了极大的兴趣和兴奋。在这项工作中，基于以下启发而构建了八种白藜芦醇导向的4-巯基对苯二甲酸酯：硫酚应是比酚更强的自由基清除剂，并且它们与galvinoxyl（GO 。）和2,2-diphenyl-1-picrylhydrazyl（DPPH）的反应速率。）甲醇和乙酸乙酯中的自由基是通过在25°C下使用停止流UV / Vis光谱法测量的。动力学分析表明，4-巯基对苯二酚是非凡的自由基清除剂，用四苯乙烯基支架中的4-SH基团取代4-OH基团是提高白藜芦醇自由基清除活性的重要策略。令人惊讶的是，在甲醇中，一些4-巯基对苯二酚的活性是白藜芦醇的10 4倍，比已知的抗氧化剂（α-生育酚，抗坏血酸，槲皮素和trolox）的活性高数十倍至数百倍。基于酸化动力学分析讨论了详细的自由基清除机理。添加乙酸显着降低了GO 。和DPPH

  DOI：

  10.1002/chem.201103897

文献信息

• BIODEGRADABLE HYBRID POLYMERS USABLE IN MEDICAL TECHNOLOGY OR IN BIOLOGY, STARTING SILANES THEREFOR, AND PREPARATION PROCESS THEREFOR AND USES THEREOF
  申请人：Fraunhofer-Gesellschaft Zur Forderung der Angewandten Forschung E.V.

  公开号：US20170313726A1

  公开（公告）日：2017-11-02

  The invention relates to a silane or silane mixture obtainable by reacting a hydrolysable silane of the formula (A): SiR4 in which R is a hydrolytically condensable group or hydroxyl with a compound R*(OH)x where x is 1, 2, 3 or greater 3, where R* has a straight-chain or branched hydrocarbon skeleton which, according to the number x, is monovalent, divalent, trivalent or multivalent, and has a hydrocarbonaceous chain interrupted by at least two —C(O)O— groups, wherein there are a maximum of 8 successive carbon atoms in the individual hydrocarbon units formed by interruptions within this chain and the, or in the case of branched structures at least one, end of the hydrocarbonaceous chain at the opposite end to the sole hydroxyl group or one of the hydroxyl groups bears an organically polymerizable group, wherein the alcohol is otherwise unsubstituted or has further substituents. The invention further relates to an organically modified silica polycondensate formed as a result of hydrolytic condensation of the silane or silane mixture and optionally a subsequent organic polymerization of the organically polymerizable groups, with optional addition of an organic, at least difunctional compound to the silica polycondensate prior to the organic polymerization.

  该发明涉及一种硅烷或硅烷混合物，其可通过将具有以下式(A)的可水解硅烷与化合物R*(OH)x反应而得到：SiR4，其中R是一个可水解缩聚基团或羟基，化合物R*具有直链或支链烃骨架，根据数目x，该骨架是一价、二价、三价或多价的，并且具有至少两个—C(O)O—基团中断的烃链，其中在该链内由中断形成的各个烃单元中最多有8个连续的碳原子，或者在支链结构的情况下，至少有一个烃链的末端，与唯一的羟基或其中一个羟基相对的末端具有一个有机聚合基团，其中醇在其他方面未被取代或具有进一步的取代基。该发明还涉及一种有机改性的二氧化硅缩聚物，其是由硅烷或硅烷混合物的水解缩聚以及有机聚合基团的随后有机聚合形成的，有机聚合之前在有机聚合之前向二氧化硅缩聚物中添加有机的至少二官能化合物。
• TOUGH, HEALABLE COMPOSITES DISPLAYING STRESS RELAXATION AT THE RESIN-FILLER INTERFACE
  申请人：THE REGENTS OF THE UNIVERSITY OF COLORADO, A BODY CORPORATE

  公开号：US20210002469A1

  公开（公告）日：2021-01-07

  The present invention relates in part to compositions displaying stress relaxation at the polymer-filler interface. The adaptive interface (AI) formed by coupling moieties capable of dynamic covalent chemistry (DCC) within the polymer-filler interface promotes stress relaxation and yields tough, and healable composites.

  本发明部分涉及在聚合物-填料界面上显示应力松弛的组合物。通过在聚合物-填料界面内耦合能够进行动态共价化学（DCC）的偶联基而形成的自适应界面（AI），促进了应力松弛，并产生了坚韧且可愈合的复合材料。
• Polymer modified adducts of epoxy resins and active hydrogen containing compounds containing mesogenic moieties
  申请人：THE DOW CHEMICAL COMPANY

  公开号：EP0469492A2

  公开（公告）日：1992-02-05

  Polymer modified adducts are prepared by (A) reacting (1) an epoxy resin having an average of more than one vicinal epoxide group with (2) a compound containing an average of two or more hydrogen atoms reactive with an epoxide group; and (B) partially vinylizing reacting the product from step (A); and (C) polymerizing the partially vinylized product from step (B) with (3) a polymerizable ethylenically unsaturated monomer; with the proviso that at least one of the components (1), (2) or (3) contain one or more mesogenic or rodlike moieties. These adducts are useful as epoxy resin curing agents.

  聚合物改性加合物的制备方法是：(A)将(1)具有平均一个以上副环氧基团的环氧树脂与(2)含有平均两个或两个以上与环氧基团反应的氢原子的化合物反应；以及(B)将步骤(A)的产物部分乙烯基化；(C) 将步骤(B)的部分乙烯基化产物与(3)可聚合的乙烯基不饱和单体聚合；但条件是组分(1)、(2)或(3)中至少有一种含有一个或多个介原或棒状分子。这些加合物可用作环氧树脂固化剂。
• Adducts of epoxy resins and active hydrogen containing compounds containing mesogenic moieties
  申请人：THE DOW CHEMICAL COMPANY

  公开号：EP0478918A2

  公开（公告）日：1992-04-08

  Adducts containing mesogenic or rodlike moieties are prepared by reacting (1) at least one compound containing an average of more than one vicinal epoxide group per molecule with (2) at least one compound containing an average of more than one reactive hydrogen atom per molecule; with the proviso that at least one member of components (1) and (2) contains a mesogenic or rodlike moiety. These compounds are useful as curing agents for epoxy resins.

  含有中间体或棒状分子的加合物是通过以下反应制备的：(1) 至少一种平均每分子含有一个以上邻位环氧基团的化合物与 (2) 至少一种平均每分子含有一个以上活性氢原子的化合物；但(1)和(2)组分中至少有一个成员含有中间体或棒状分子。这些化合物可用作环氧树脂的固化剂。
• DISPERSION
  申请人：Asahi Kasei Kabushiki Kaisha

  公开号：EP3305853A1

  公开（公告）日：2018-04-11

  A dispersion which contains a dispersant and particles selected from among metal particles and metal oxide particles, and which is characterized in that: the dispersant has a chemical structure that is able to be bonded or adsorbed to the particles; and the dispersant contains a low-molecular-weight dispersant that has at least one peak within a molecular weight region of 31 or more but less than 1,000 in the molecular weight distribution curve in terms of polyethylene glycol as determined by gel permeation chromatography and a high-molecular-weight dispersant that has at least one peak within a molecular weight region of 1,000 or more but 40,000 or less in the above-described molecular weight distribution curve.

  一种分散剂，它含有一种分散剂和选自金属颗粒和金属氧化物颗粒的颗粒，其特征在于分散剂的化学结构能与颗粒结合或吸附；分散剂含有一种低分子量分散剂，该分散剂在凝胶渗透色谱法测定的聚乙二醇分子量分布曲线中，至少有一个峰值在 31 或以上但小于 1,000 的分子量区域内；还含有一种高分子量分散剂，该分散剂在上述分子量分布曲线中，至少有一个峰值在 1,000 或以上但小于 40,000 的分子量区域内。