ethyl (E)-3-(p-methoxy-2',4"-biphenyl)acrylate

• 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: ethyl (E)-3-(p-methoxy-2',4"-biphenyl)acrylate
• 英文别名: ethyl E-3-(4'-methoxybiphen-2-yl)acrylate；ethyl (E)-3-[2-(4-methoxyphenyl)phenyl]prop-2-enoate
• 化学式: C₁₈H₁₈O₃
• 分子量: 282.339
• InChiKey: CLEFWHQZDNBOKI-JLHYYAGUSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  4.2
• 重原子数：
  21
• 可旋转键数：
  6
• 环数：
  2.0
• sp3杂化的碳原子比例：
  0.17
• 拓扑面积：
  35.5
• 氢给体数：
  0
• 氢受体数：
  3

反应信息

• 作为产物：
  描述：

  2-amino-4-methoxybiphenyl 在 palladium diacetate 、 硫酸 、 双二苯基膦甲烷 、 sodium nitrite 作用下， 以 乙二醇二甲醚 、 水 、 N,N-二甲基甲酰胺 为溶剂， 反应 48.75h， 生成 ethyl (E)-3-(p-methoxy-2',4"-biphenyl)acrylate
  参考文献：
  名称：

  Novel 1,4-Palladium Migration in Organopalladium Intermediates Derived from o-Iodobiaryls

  摘要：

  A novel 1,4-palladium migration in organopalladium intermediates derived from o-iodobiaryls has been observed under modified Heck reaction conditions. This migration process can be switched "on" or "off" by simply choosing the appropriate reaction conditions.

  DOI：

  10.1021/ja027548l

文献信息

• One-pot Wittig olefination–Suzuki reaction—the compatibility of conjugated phosphoranes in Pd(0) catalysed C–C-bond forming reactions
  作者：Thies Thiemann、Masataka Watanabe、Yasuko Tanaka、Shuntaro Mataka

  DOI：10.1039/b516724h

  日期：——

  acids can be subjected to a combined Suzuki coupling–Wittig olefination in their reaction with arene halides and conjugated phosphoranes. Also, the transformations can be carried out under ultrasonication in a biphasic medium of aq. Na2CO3 and hexane–ether, where phosphonium salts are used as the starting materials.

  甲酰芳基硼酸和甲酰戊烯基硼酸在与芳烃的反应中可以进行合并的Suzuki偶联-Wittig烯化反应 卤化物 和共轭 磷烷。同样，可以在以下条件下进行转换超音波在双相水溶液中。Na 2 CO 3和正己烷–醚，其中phospho盐用作起始原料。
• Atom-economic threefold cross-couplings of triarylbismuth reagents with 2-halobenzaldehydes and pot-economic in situ Wittig functionalizations with phosphonium salts
  作者：Maddali L. N. Rao、Ritesh J. Dhanorkar

  DOI：10.1039/c4ra13348j

  日期：——

  In this paper we report an efficient pot-economic methodology for the synthesis of ortho-olefinated biaryls. This has been achieved through an atom-economic threefold cross-coupling of triarylbismuth reagents with 2-halobenzaldehydes followed by pot-economic in situ Wittig olefination. The overall process is a pot-economic straightforward synthesis of ortho-olefinated biaryls from 2-halobenzaldehydes, triarylbismuth reagents and phosphonium salts. This pot-economic approach was applied to the formal synthesis of medicinally important Eupomatilone-6.

  本文报道了一种高效的原位Wittig烯化反应方法，用于合成邻烯基联苯。通过三芳基铋试剂与2-卤代苯甲醛的三重交叉偶联，继而进行原位Wittig烯化，实现了这一目标。整个过程是从2-卤代苯甲醛、三芳基铋试剂和膦盐出发，高效简便地合成邻烯基联苯。这一方法已成功应用于重要的药用成分Eupomatilone-6的正式合成中。
• Aryl to Aryl Palladium Migration in the Heck and Suzuki Coupling of <i>o</i>-Halobiaryls
  作者：Marino A. Campo、Haiming Zhang、Tuanli Yao、Abdellatif Ibdah、Ryan D. McCulla、Qinhua Huang、Jian Zhao、William S. Jenks、Richard C. Larock

  DOI：10.1021/ja069238z

  日期：2007.5.1

  A novel 1,4-palladium migration between the o- and o'-positions of biaryls has been observed in organopalladium intermediates derived from o-halobiaryls. The organopalladium intermediates generated by this migration have been trapped either by a Heck reaction employing ethyl acrylate or by Suzuki cross-coupling using arylboronic acids. This palladium migration can be activated or deactivated by choosing the appropriate reaction conditions. Chemical and computational evidence supports the presence of an equilibrium that correlates with the C-H acidity of the available arene positions.
• C−H Activation and Palladium Migration within Biaryls under Heck Reaction Conditions
  作者：Gunter Karig、Maria-Teresa Moon、Nopporn Thasana、Timothy Gallagher

  DOI：10.1021/ol026426v

  日期：2002.9.1

  [GRAPHICS]Biaryl bromides such as 1 (R=NO2, H, OMe) undergo the Heck reaction to give both the expected products 3 ("retention") as well as "crossover" products 4 derived from a migration of Pd and net transfer of reactivity from one aryl ring to the other. Under the conditions used, crossover is increasingly favored when electron-deficient arenes are involved. Crossover products derived from transfer onto the pyridine ring have also been observed.