dimethyl bis-2,2'-(1,2-ethenediyl)benzoate | 60040-81-5

• 分子结构分类: 有机化合物 - 苯丙烷和聚酮 - 二苯乙烯类
• 英文名称: dimethyl bis-2,2'-(1,2-ethenediyl)benzoate
• 英文别名: trans-dimethyl 2,2'-(ethene-1,2-diyl)dibenzoate；(E)-dimethyl 2,2'-(ethene-1,2-diyl)dibenzoate；methyl 2-[(E)-2-(2-methoxycarbonylphenyl)ethenyl]benzoate
• CAS: 60040-81-5
• 化学式: C₁₈H₁₆O₄
• 分子量: 296.323
• InChiKey: FNBAPAFWWYCASO-VAWYXSNFSA-N

物化性质

• 熔点：
  100-101.5 °C
• 沸点：
  448.2±34.0 °C(Predicted)
• 密度：
  1.192±0.06 g/cm3(Predicted)

计算性质

• 辛醇/水分配系数(LogP)：
  3.9
• 重原子数：
  22
• 可旋转键数：
  6
• 环数：
  2.0
• sp3杂化的碳原子比例：
  0.11
• 拓扑面积：
  52.6
• 氢给体数：
  0
• 氢受体数：
  4

反应信息

• 作为反应物：
  描述：

  dimethyl bis-2,2'-(1,2-ethenediyl)benzoate 以51%的产率得到
  参考文献：
  名称：

  RUBIN M. B.; WELNER S., J. ORG. CHEM., 1980, 45, NO 10, 1847-1852

  摘要：

  DOI：
• 作为产物：
  描述：

  (E)-2,2'-dibromostilbene 在 硫酸 作用下， 生成 dimethyl bis-2,2'-(1,2-ethenediyl)benzoate
  参考文献：
  名称：

  Organoboron Compounds. XIII. Boronic Acids with Neighboring Unsaturated Groups¹

  摘要：

  DOI：

  10.1021/jo01063a069

文献信息

• Stereoselective synthesis of hydroxy stilbenoids and styrenes by atom-efficient olefination with thiophthalides
  作者：Prithiba Mitra、Brateen Shome、Saroj Ranjan De、Anindya Sarkar、Dipakranjan Mal

  DOI：10.1039/c2ob06991a

  日期：——

  The synthesis of stilbenoids and styryl carboxylic acids is accomplished with high E-stereoselectivity by olefination of aldehydes with thiophthalides under basic conditions. The olefination is highly atom-efficient as it only loses elemental sulfur during the reaction. This olefination, in conjunction with retro Kolbe–Schmitt reaction, allows facile synthesis of E-hydroxystilbenoids with minimal employment of protecting groups. This study also discloses two important findings: formation of i) 4-methylsulfanyl isocoumarins and ii) an 2-arylindenone.

  在碱性条件下，通过硫代邻苯二甲酸酯对醛进行烯化反应，可以高E-立体选择性地合成芪类化合物和苯乙烯基羧酸。该烯化反应具有高度的原子效率，因为在反应过程中仅损失了元素硫。这种烯化反应与逆科尔比-施密特反应相结合，能够简便地合成E-羟基芪类化合物，并最小程度地使用保护基团。这项研究还揭示了两个重要发现：i) 形成4-甲硫基异香豆素和ii) 形成2-芳基茚满酮。
• Efficient<i>E</i>-Selective Transfer Semihydrogenation of Alkynes by Means of Ligand-Metal Cooperating Ruthenium Catalyst
  作者：Sanaa Musa、Amrita Ghosh、Luigi Vaccaro、Lutz Ackermann、Dmitri Gelman

  DOI：10.1002/adsc.201500372

  日期：2015.7.6

  transfer semihydrogenation of internal alkynes employing a previously described bifunctional ruthenium‐based PC(sp3)P complex, 20 mol% of sodium formate and nearly stoichiometric formic acid. Semihydrogenation of the terminal alkynes results in the formation of the corresponding styrenes. The mechanism of the reaction includes stepwise transfer of both the hydride and the proton of the formic acid to the

  该手稿描述了使用先前描述的双功能钌基PC（sp 3）P络合物，20 mol％的甲酸钠和接近化学计量的甲酸进行内部炔烃E选择性转移半氢化的有效方案。末端炔烃的半氢化导致形成相应的苯乙烯。该反应的机理包括将氢化物和甲酸的质子逐步转移到底物上。这一事实允许通过简单地施加甲酸/甲酸钠/ D 2来开发用于合成单氘代烯烃的简便方案。以O混合物为氢源。通常已经实现了高产率，选择性和官能团相容性。
• 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。
• Synthesis of Styrenes and <i>E‐</i>Stilbenes by Palladium‐Catalyzed Vinylation of Aryl Iodides with 1,2‐Dibromoethane
  作者：Guangfa Shi、Xiaotian Ma、Qiongqiong Zhu、Yanghui Zhang

  DOI：10.1002/adsc.202301146

  日期：2024.3.8

  The Pd-catalyzed vinylation reactions of aryl iodides using 1,2-dibromoethane is developed for the synthesis of styrenes and stilbenes. In these reactions, vinyl bromide is generated from 1,2-dibromoethane and then undergoes reductive cross-coupling with aryl iodides, affording styrene products. Under slightly modified reaction conditions, styrenes can continue reacting with vinyl bromide to form E-stilbenes

  使用 1,2-二溴乙烷的钯催化芳基碘化物乙烯基化反应被开发用于合成苯乙烯和茋。在这些反应中，溴乙烯由 1,2-二溴乙烷产生，然后与芳基碘进行还原交叉偶联，得到苯乙烯产物。在稍加修改的反应条件下，苯乙烯可以继续与溴乙烯反应生成E-二苯乙烯，这提供了二苯乙烯的一锅合成方法。醇，包括异丙醇和甲醇，在这些还原交叉偶联反应中用作还原剂。
• 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。