(E)-methyl 4-(prop-1-enyl)benzoate | 158475-38-8

• 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: (E)-methyl 4-(prop-1-enyl)benzoate
• 英文别名: methyl 4-(prop-1-en-1-yl)benzoate；methyl (E)-4-(prop-1-en-1-yl)benzoate；(E)-Methyl 4-(prop-1-en-1-yl)benzoate；methyl 4-[(E)-prop-1-enyl]benzoate
• CAS: 158475-38-8
• 化学式: C₁₁H₁₂O₂
• 分子量: 176.215
• InChiKey: NWGFEELIDICDEF-ONEGZZNKSA-N

物化性质

• 沸点：
  274.7±19.0 °C(Predicted)
• 密度：
  1.046±0.06 g/cm3(Predicted)

计算性质

• 辛醇/水分配系数(LogP)：
  3.3
• 重原子数：
  13
• 可旋转键数：
  3
• 环数：
  1.0
• sp3杂化的碳原子比例：
  0.18
• 拓扑面积：
  26.3
• 氢给体数：
  0
• 氢受体数：
  2

反应信息

• 作为反应物：
  描述：

  (E)-methyl 4-(prop-1-enyl)benzoate 以 正己烷 为溶剂， 生成 methyl 4-(prop-1-en-1-yl)benzoate
  参考文献：
  名称：

  Singlet State Cis,Trans Photoisomerization and Intersystem Crossing of 1-Arylpropenes

  摘要：

  The temperature dependence of the singlet state lifetime and photoisomerization and fluorescence quantum yields for trans- and cis-1-phenylpropene have been determined in hexane solution. Calculated barriers for twisting about the double bond on the singlet potential energy surface are 8.8 and 4.6 kcal/mol for the trans and cis isomer, respectively. The barrier for the trans isomer is sufficiently high to prevent isomerization on the singlet state surface at or below room temperature. However, isomerization occurs at low temperatures as a consequence of intersystem crossing to the triplet state, which undergoes barrierless isomerization. The quantum yield for intersystem crossing, as determined by time-resolved photoacoustic calorimetry, is 0.60 +/- 0.03 and the rate constant for intersystem crossing is 4.7 x 10(7) s(-1). While internal conversion is not significant at or below room temperature, thermally activated internal conversion competes with singlet isomerization at high temperatures. The cis isomer undergoes isomerization predominantly via the singlet state at room temperature. Both electron-donating (p-methoxy) and electron-withdrawing (m- and p-cyano, p-carbomethoxy, and p-trifluormethyl) aromatic substituents are found to lower the barrier for singlet state isomerization. Increased solvent polarity (acetonitrile vs hexane) results in variable decreases in the barrier for singlet state isomerization. Photoisomerization of the p-cyano derivative at room temperature occurs predominantly via the triplet state in hexane solution and via the singlet state in acetonitrile solution. The effects of substituents and solvent are better correlated with the magnitude of the S-2-S-1 energy gap than the stability of either zwitterionic or biradical intermediates. Rate constants for intersystem crossing are, in most cases, not highly dependent upon aromatic substitution or solvent polarity.

  DOI：

  10.1021/ja00102a014
• 作为产物：
  描述：

  4-乙烯基苯甲酸甲酯 在 三(4-甲氧苯基)膦 、 碘 、 sodium acetate 作用下， 以 1,4-二氧六环 、 乙二醇二甲醚 、 乙腈 为溶剂， 反应 26.0h， 生成 (E)-methyl 4-(prop-1-enyl)benzoate
  参考文献：
  名称：

  黄原酸盐阴离子的直接光激发用于醇的脱氧烯基化

  摘要：

  在本报告中，我们将黄原酸盐确定为一类独特的可见光可激发烷基自由基前体，它们同时充当强光还原剂和烷基自由基源。在黄原酸盐阴离子的直接光激发下，通过一锅法实现了多种伯醇、仲醇和叔醇的有效脱氧烯基化和烷基化，避免了任何光催化剂。该方法具有广泛的底物范围和良好的官能团耐受性，可实现复杂分子的后期功能化。

  DOI：

  10.1021/acs.orglett.2c00889

文献信息

• Preparation of Vinyl Arenes by Nickel-Catalyzed Reductive Coupling of Aryl Halides with Vinyl Bromides
  作者：Jiandong Liu、Qinghua Ren、Xinghua Zhang、Hegui Gong

  DOI：10.1002/anie.201607959

  日期：2016.12.12

  This work emphasizes the synthesis of substituted vinyl arenes by reductive coupling of aryl halides with vinyl bromides under mild and easy‐to‐operate nickel‐catalyzed reaction conditions. A broad range of aryl halides, including heteroaromatics, and vinyl bromides were employed to yielding products in moderate to excellent yields with high functional‐group tolerance. The nickel‐catalytic system displays

  这项工作强调了在温和且易于操作的镍催化反应条件下，通过芳基卤化物与乙烯基溴的还原偶联来合成取代的乙烯基芳烃。广泛使用的芳基卤化物，包括杂芳族化合物和乙烯基溴化物，以中等至优异的收率生产了具有高官能团耐受性的产品。镍催化系统在两个C（sp 2）-卤化物偶合体之间显示出良好的化学选择性，从而证明了不同于其他逐步方案的机理途径。
• Enantio‐ and Regioselective NiH‐Catalyzed Reductive Hydroarylation of Vinylarenes with Aryl Iodides
  作者：Yuli He、Chuang Liu、Lei Yu、Shaolin Zhu

  DOI：10.1002/anie.202010386

  日期：2020.11.23

  A highly enantio‐ and regioselective hydroarylation process of vinylarenes with aryl halides has been developed using a NiH catalyst and a new chiral bis imidazoline ligand. A broad range of structurally diverse, enantioenriched 1,1‐diarylalkanes, a structure found in a number of biologically active molecules, have been obtained with excellent yields and enantioselectivities under extremely mild conditions

  使用NiH催化剂和新型手性双咪唑啉配体开发了乙烯基芳烃与芳基卤化物的高度对映和区域选择性加氢芳基化方法。在极其温和的条件下，以优异的收率和对映选择性获得了多种结构多样的，对映体富集的1,1-二芳基烷烃，该结构存在于许多生物活性分子中。
• A Stereoconvergent Cyclopropanation Reaction of Styrenes
  作者：Ana M. del Hoyo、Ana G. Herraiz、Marcos G. Suero

  DOI：10.1002/anie.201610924

  日期：2017.2

  The first stereoconvergent cyclopropanation reaction by means of photoredox catalysis using diiodomethane as the methylene source is described. This transformation exhibits broad functional group tolerance and it is characterized by an excellent stereocontrol en route to trans‐cyclopropanes regardless of whether E‐ or Z‐styrene substrates were utilized.

  描述了通过使用二碘甲烷作为亚甲基源的光氧化还原催化进行的第一立体会聚环丙烷化反应。这种转化表现出宽泛的官能团耐受性，并且无论在使用E-或Z-苯乙烯底物方面，其特征都是出色的立体控制方式，从而可以有效地转化为反式环丙烷。
• E- and Z-, di- and tri-substituted alkenyl nitriles through catalytic cross-metathesis
  作者：Yucheng Mu、Thach T. Nguyen、Ming Joo Koh、Richard R. Schrock、Amir H. Hoveyda

  DOI：10.1038/s41557-019-0233-x

  日期：2019.5

  the development of several efficient catalytic cross-metathesis strategies, which provide direct access to a considerable range of Z- or E-di-substituted cyano-substituted alkenes or their corresponding tri-substituted variants. Depending on the reaction type, a molybdenum-based monoaryloxide pyrrolide or chloride (MAC) complex may be the optimal choice. The utility of the approach, enhanced by an easy

  腈存在于许多生物活性化合物中，属于有机化学中用途最广泛的官能团之一。尽管最近有许多显着的进步，但是，没有方法可用于制备二或三取代的烯基腈。涉及范围广并且可以以高立体异构体纯度递送所需产物的相关方法尤其缺乏。在这里，我们描述了几种有效的催化交叉复分解策略的发展，这些策略提供了直接进入相当大范围的Z-或E-二取代的氰基取代的烯烃或其相应的三取代变体的途径。取决于反应类型，基于钼的单芳氧基吡咯化物或氯化物（MAC）络合物可能是最佳选择。该方法的实用性，
• Pd-Catalyzed Stereoselective 1,2-Aryboration of Alkenylarenes
  作者：Penglin Zhang、Mimi Xing、Qitao Guan、Jinguo Zhang、Qian Zhao、Chun Zhang

  DOI：10.1021/acs.orglett.9b03114

  日期：2019.10.4

  palladium-catalyzed highly regio- and diastereoselective arylboration of alkenylarenes has been developed. This chemistry afforded the benzylic boronic esters with a broad substrate scope, which are valuable synthetic intermediates for organic synthesis. The chiral anion phase-transfer strategy was designed for this transformation to realize the regio-, diastereo-, and enantioselective control of this reaction

  已经开发了钯催化的烯基芳烃的高度区域和非对映选择性芳基硼化。该化学方法提供了具有广泛底物范围的苄基硼酸酯，其是有机合成的有价值的合成中间体。为该转化设计了手性阴离子相转移策略，以同时实现对该反应的区域，非对映和对映选择性控制。