(E)-1-methoxy-2-(4-methylstyryl)benzene

• 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: (E)-1-methoxy-2-(4-methylstyryl)benzene
• 英文别名: 1-methoxy-2-[(E)-2-(4-methylphenyl)ethenyl]benzene
• 化学式: C₁₆H₁₆O
• 分子量: 224.302
• InChiKey: YFMWCYOFXPDZMZ-VAWYXSNFSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  4.5
• 重原子数：
  17
• 可旋转键数：
  3
• 环数：
  2.0
• sp3杂化的碳原子比例：
  0.12
• 拓扑面积：
  9.2
• 氢给体数：
  0
• 氢受体数：
  1

反应信息

• 作为反应物：
  描述：

  (E)-1-methoxy-2-(4-methylstyryl)benzene 、 三溴甲烷 、 叔丁醇 以59%的产率得到
  参考文献：
  名称：

  MOUSSA, G. E. M.;SHABAN, M. E.;GIRGIS, D. B., EGUPT. J. CHEM., 30,(1987(1988)) N, C. 77-83

  摘要：

  DOI：
• 作为产物：
  描述：

  (chloro(p-tolyl)methyl)diphenylphosphine oxide 在 sodium tetrahydroborate 、 正丁基锂 作用下， 以 二甲基亚砜 为溶剂， 反应 24.17h， 生成 (E)-1-methoxy-2-(4-methylstyryl)benzene
  参考文献：
  名称：

  Efficient synthesis of benzylphosphine oxides and E-stilbenes

  摘要：

  A series of substituted benzylphosphine oxides has been synthesised by reduction of the corresponding (alpha-chlorobenzyl)phosphine oxide, derived from the benzaldehyde and chlorodiphenylphosphine, with either sodium borohydride (DMSO, 60-70 degrees C, 12 h) or tributyltin hydride and AIBN (C6H6. 80 degrees C, 2 h). Reaction of the (alpha-lithiobenzyl)phosphine oxide with aldehydes gave exclusively E-alkenes.

  DOI：

  10.1016/s0040-4039(00)73481-2

文献信息

• Photoinitiated carbonyl-metathesis: deoxygenative reductive olefination of aromatic aldehydes <i>via</i> photoredox catalysis
  作者：Shun Wang、Nanjundappa Lokesh、Johnny Hioe、Ruth M. Gschwind、Burkhard König

  DOI：10.1039/c9sc00711c

  日期：——

  carbonyl groups in a single reaction are less explored. Here, we report a photoredox-catalysis that uses B2pin2 as terminal reductant and oxygen trap allowing for deoxygenative olefination of aromatic aldehydes under mild conditions. This strategy provides access to a diverse range of symmetrical and unsymmetrical alkenes with moderate to high yield (up to 83%) and functional-group tolerance. To follow

  羰基-羰基烯化反应，即 McMurry 反应，代表了构建烯烃的有力策略。然而，在单个反应中直接偶联两个羰基的催化变体的探索较少。在这里，我们报告了一种使用 B 2 pin 2的光氧化还原催化作为末端还原剂和氧阱，允许在温和条件下对芳族醛进行脱氧烯化。该策略提供了获得各种对称和不对称烯烃的途径，具有中等至高产率（高达 83%）和官能团耐受性。为了遵循反应途径，进行了一系列实验，包括自由基抑制、氘标记、荧光猝灭和循环伏安法。此外，结合 NMR 研究和 DFT 计算来检测和分析三种活性中间体：环状三元阴离子物质、α-氧硼基碳负离子和 1,1-苄基二硼酸酯。基于这些结果，我们提出了一种 C C 键生成机制，涉及顺序自由基硼化、“bora-Brook”重排、B 2pin 2介导的脱氧和硼-维蒂希过程。
• Scope and limitations of the Heck–Matsuda-coupling of phenol diazonium salts and styrenes: a protecting-group economic synthesis of phenolic stilbenes
  作者：Bernd Schmidt、Nelli Elizarov、René Berger、Frank Hölter

  DOI：10.1039/c3ob40420j

  日期：——

  4-Phenol diazonium salts undergo Pd-catalyzed Heck reactions with various styrenes to 4′-hydroxy stilbenes. In almost all cases higher yields and fewer side products were observed, compared to the analogous 4-methoxy benzene diazonium salts. In contrast, the reaction fails completely with 2- and 3-phenol diazonium salts. For these substitution patterns the methoxy-substituted derivatives are superior

  4-苯酚重氮盐与各种苯乙烯进行Pd催化的Heck反应，生成4'-羟基苯乙烯。与类似的4-甲氧基苯重氮盐相比，几乎在所有情况下均观察到更高的收率和更少的副产物。相反，用2-和3-苯酚重氮盐使反应完全失败。对于这些取代方式，甲氧基取代的衍生物是优越的。
• Palladium-Catalyzed Mizoroki–Heck Reaction of Nitroarenes and Styrene Derivatives
  作者：Toshimasa Okita、Kitty K. Asahara、Kei Muto、Junichiro Yamaguchi

  DOI：10.1021/acs.orglett.0c00983

  日期：2020.4.17

  We have developed a Mizoroki–Heck reaction of nitroarenes with alkenes under palladium catalysis. The use of a Pd/BrettPhos catalyst promoted the alkenylation, whereas other catalysts led to a decrease in the product yield. In addition to nitroarenes, nitroheteroarenes were also applicable to the present reaction. The combination of a nucleophilic aromatic substitution (SNAr) with the denitrative alkenylation

  我们已经开发了钯催化下硝基芳烃与烯烃的Mizoroki-Heck反应。Pd / BrettPhos催化剂的使用促进了烯基化，而其他催化剂导致产物收率下降。除硝基芳烃外，硝基杂芳烃也适用于本反应。亲核芳族取代（S的组合Ñ AR）与denitrative烯基化产生在单罐操作的多官能化的芳烃。
• Dual ligand-promoted palladium-catalyzed nondirected C–H alkenylation of aryl ethers
  作者：Biao Yin、Manlin Fu、Lei Wang、Jiang Liu、Qing Zhu

  DOI：10.1039/d0cc00940g

  日期：——

  Direct C-H functionalization of aryl ethers remains challenging owing to their low reactivity and selectivity. Herein, a novel strategy for nondirected C-H alkenylation of aryl ethers promoted by a dual ligand catalyst was demonstrated. This catalytic system readily achieved the highly efficient alkenylation of alkyl aryl ethers (anisole, phenetole, n-propyl phenyl ether, n-butyl phenyl ether and benzyl

  芳基醚的直接CH官能化由于其低反应性和选择性而仍然具有挑战性。在本文中，证明了由双配体催化剂促进的芳基醚的非定向CH烯基化的新策略。该催化体系可轻松实现烷基芳基醚（苯甲醚，苯酚，正丙基苯基醚，正丁基苯基醚和苄基苯基醚），环状芳基醚（1,4-苯并二恶烷，2,3-二氢苯并呋喃）的高效烯基化，二苯并呋喃）和二苯氧化物。此外，所提出的方法已成功地用于含有芳基醚基序的复杂药物的后期修饰。有趣的是，本文开发的化合物显示出荧光性质，这将有助于其生物学应用。
• Nickel-Catalyzed System for the Cross-Coupling of Alkenyl Methyl Ethers with Grignard Reagents under Mild Conditions
  作者：Thomas Hostier、Zeina Neouchy、Vincent Ferey、Domingo Gomez Pardo、Janine Cossy

  DOI：10.1021/acs.orglett.8b00313

  日期：2018.4.6

  A nickel-catalyzed cross-coupling of alkenyl methyl ethers with Grignard reagents, under mild conditions, is described. These conditions allowed access to various stilbenes and heterocyclic stilbenic derivatives as well as to a potential anticancer agent DMU-212.

  描述了在温和条件下镍催化的链烯基甲基醚与格利雅试剂的交叉偶联。这些条件允许获得各种斯蒂芬烯和杂环斯蒂芬烯衍生物以及潜在的抗癌剂DMU-212。