3-氯苯硼酸-1,3-丙二醇酯 | 684648-44-0

• 分子结构分类: 有机化合物 - 苯类化合物 - 苯和取代衍生物
• 中文名称: 3-氯苯硼酸-1,3-丙二醇酯
• 英文名称: 2-(3-chlorophenyl)-1,3,2-dioxaborinane
• CAS: 684648-44-0
• 化学式: C₉H₁₀BClO₂
• 分子量: 196.441
• InChiKey: ZRFONUAUVSVJOF-UHFFFAOYSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  1.47
• 重原子数：
  13
• 可旋转键数：
  1
• 环数：
  2.0
• sp3杂化的碳原子比例：
  0.33
• 拓扑面积：
  18.5
• 氢给体数：
  0
• 氢受体数：
  2

反应信息

• 作为反应物：
  描述：

  3-氯苯硼酸-1,3-丙二醇酯 、 2-(N-苄基氨基)-3-甲基吡啶 在 频哪酮 、 十二羰基三钌 作用下， 反应 24.0h， 以38%的产率得到N-((3-chlorophenyl)(phenyl)methyl)-3-methylpyridin-2-amine
  参考文献：
  名称：

  Mechanistic Investigations and Substrate Scope Evaluation of Ruthenium-Catalyzed Direct sp³ Arylation of Benzylic Positions Directed by 3-Substituted Pyridines

  摘要：

  A highly efficient direct arylation process of benzylic amines with arylboronates was developed that employs Ru catalysis. The arylation takes place with greatest efficiency at the benzylic sp(3) carbon. If the distance to the activating aryl ring is increased, arylation is still possible but the yield drops significantly. Efficiency of the CH activation was found to be significantly increased by use of 3-substituted pyridines as directing groups, which can be removed after the transformation in high yield. Calculation of the energy profile of different rotamers of the substrate revealed that presence of a substituent in the 3-position favors a conformation with the CH2 group adopting a position in closer proximity to the directing group and facilitating C-H insertion. This operationally simple reaction can be carried out in argon atmosphere as well as in air and under neutral reaction conditions, displaying a remarkable functional group tolerance. Mechanistic studies were carried out and critically compared to mechanistic reports of related transformations.

  DOI：

  10.1021/jo302547q
• 作为产物：
  描述：

  3-氯苯硼酸 、 1,3-丙二醇 以 二氯甲烷 为溶剂， 以95%的产率得到3-氯苯硼酸-1,3-丙二醇酯
  参考文献：
  名称：

  Ruthenium(0)-Catalyzed sp³ C–H Bond Arylation of Benzylic Amines Using Arylboronates

  摘要：

  A Ru-catalyzed direct arylation of benzylic sp(3) carbons of acyclic amines with arylboronates is reported. This highly regioselective and efficient transformation can be performed with various combinations of N-(2-pyridyl) substituted benzylamines and arylboronates. Substitution of the pyridine directing group in the 3-position proved to be crucial in order to achieve high arylation yields. Furthermore, the pyridine directing group can be removed in high yields via a two-step protocol.

  DOI：

  10.1021/ol300627p

文献信息

• Suzuki–Miyaura Coupling of Simple Ketones via Activation of Unstrained Carbon–Carbon Bonds
  作者：Ying Xia、Jianchun Wang、Guangbin Dong

  DOI：10.1021/jacs.8b02462

  日期：2018.4.25

  Here, we describe that simple ketones can be efficiently employed as electrophiles in Suzuki-Miyaura coupling reactions via catalytic activation of unstrained C-C bonds. A range of common ketones, such as cyclopentanones, acetophenones, acetone and 1-indanones, could be directly coupled with various arylboronates in high site-selectivity, which offers a distinct entry to more functionalized aromatic

  在这里，我们描述了通过催化激活无张力的 CC 键，简单的酮可以在 Suzuki-Miyaura 偶联反应中有效地用作亲电子试剂。一系列常见的酮，如环戊酮、苯乙酮、丙酮和1-茚满酮，可以直接与各种芳基硼酸酯以高位点选择性偶联，这为获得更多功能化的芳香酮提供了独特的途径。初步机理研究表明酮 α-CC 键通过氧化加成断裂。
• First selective direct mono-arylation of piperidines using ruthenium-catalyzed C–H activation
  作者：Maria C. Schwarz、Navid Dastbaravardeh、Karl Kirchner、Michael Schnürch、Marko D. Mihovilovic

  DOI：10.1007/s00706-013-0947-1

  日期：2013.4

  A Ru-catalyzed mono-arylation in alpha-position of saturated cyclic amines is reported employing a C-H activation protocol. Substitution of the pyridine directing group with a bulky group, e.g., trifluoromethyl in the 3-position, proved to be crucial to avoid bis-arylation. This highly selective transformation can be performed with different amines and arylboronate esters. Additionally, the directing group can be cleaved, taking advantage of an unprecedented detrifluoromethylation reaction.