(9-methylcarbazol-2-yl) N,N-diethylcarbamate | 1379516-36-5

• 分子结构分类: 有机化合物 - 有机杂环化合物 - 吲哚及其衍生物
• 英文名称: (9-methylcarbazol-2-yl) N,N-diethylcarbamate
• CAS: 1379516-36-5
• 化学式: C₁₈H₂₀N₂O₂
• 分子量: 296.369
• InChiKey: NBZGEUCNTQWRAY-UHFFFAOYSA-N

物化性质

• 沸点：
  404.8±41.0 °C(Predicted)
• 密度：
  1.14±0.1 g/cm3(Predicted)

计算性质

• 辛醇/水分配系数(LogP)：
  3.8
• 重原子数：
  22
• 可旋转键数：
  4
• 环数：
  3.0
• sp3杂化的碳原子比例：
  0.28
• 拓扑面积：
  34.5
• 氢给体数：
  0
• 氢受体数：
  2

反应信息

• 作为反应物：
  描述：

  (9-methylcarbazol-2-yl) N,N-diethylcarbamate 在 二氯化双(三环己基膦)镍(II) 、 1,1,3,3-四甲基二硅氧烷 、 K₃PO₄ 作用下， 以 甲苯 为溶剂， 反应 15.0h， 以93%的产率得到N-甲基咔唑
  参考文献：
  名称：

  Cine Substitution of Arenes Using the Aryl Carbamate as a Removable Directing Group

  摘要：

  An efficient and controlled means to achieve a rare cine substitution of arenes is reported. The methodology relies on the strategic use of aryl O-carbamates as readily removable directing groups for arene functionallzation. The removal of aryl carbamates is achieved by employing an airstable Ni(II) precatalyst, along with an inexpensive reducing agent, to give synthetically useful yields across a range of substrates. The net cine substitution process offers a new strategy for analogue synthesis, which complements the well-established logic for achieving arene functionalization by ipso substitution.

  DOI：

  10.1021/ol301275u
• 作为产物：
  描述：

  9-methyl-9H-carbazol-2-ol 、 N,N-二乙基氯甲酰胺 在 potassium carbonate 作用下， 以 乙腈 为溶剂， 反应 5.0h， 生成 (9-methylcarbazol-2-yl) N,N-diethylcarbamate
  参考文献：
  名称：

  铑催化芳基氨基甲酸酯与炔丙基醇的C-O键炔化

  摘要：

  描述了铑催化的芳基氨基甲酸酯与炔丙醇的炔基化反应。这种方法可以通过C–O键活化从氨基甲酸芳基酯提供芳基乙炔。炔丙醇用作炔化剂允许使用与有机金属亲核试剂不相容的多种官能团。该反应还用于扩大氨基甲酸酯部分作为可转化的邻位导向基团的效用。

  DOI：

  10.1021/acs.orglett.8b00674

文献信息

• Revisitation of Organoaluminum Reagents Affords a Versatile Protocol for C–X (X = N, O, F) Bond-Cleavage Cross-Coupling: A Systematic Study
  作者：Hiroyuki Ogawa、Ze-Kun Yang、Hiroki Minami、Kumiko Kojima、Tatsuo Saito、Chao Wang、Masanobu Uchiyama

  DOI：10.1021/acscatal.7b01058

  日期：2017.6.2

  A revisit of organoaluminum reagents for cross-coupling reactions has opened up several types of C–C bond formation protocols through cleavage of phenolic/alcoholic C–O and C–F and ammonium C–N bonds. Catalyzed by the commercially available NiCl2(PCy3)2 catalyst, these reactions proceed smoothly with a wide range of substrates and broad functional group compatibility, providing a versatile methodology

  再次探讨用于交叉偶联反应的有机铝试剂，通过裂解酚/醇C-O和C-F和铵C-N键，开辟了几种类型的C-C键形成规程。在市售的NiCl 2（PCy 3）2催化剂的催化下，这些反应可在多种底物和广泛的官能团相容性下顺利进行，从而为有机铝介导的交叉偶联过程提供了一种通用的方法。
• DFT Studies Provide Mechanistic Insight into Nickel-Catalyzed Cross-Coupling Involving Organoaluminum-Mediated C–O Bond Cleavage
  作者：Chao Wang、Masanobu Uchiyama、Ze-Kun Yang

  DOI：10.1055/s-0036-1590863

  日期：2017.12

  Density functional theory (DFT) calculations were performed to examine the reaction pathway of Ni-catalyzed cross-coupling with organoaluminum through C–O bond cleavage. The results indicate that the strong Lewis acidity of organoaluminums significantly facilitates the transmetalation step, but not the oxidative addition or reductive elimination step.

  进行密度泛函理论 (DFT) 计算以检查 Ni 催化通过 C-O 键裂解与有机铝交叉偶联的反应途径。结果表明，有机铝的强路易斯酸性显着促进了金属转移步骤，但不利于氧化加成或还原消除步骤。
• Nickel-Catalyzed Suzuki–Miyaura Couplings in Green Solvents
  作者：Stephen D. Ramgren、Liana Hie、Yuxuan Ye、Neil K. Garg

  DOI：10.1021/ol401727y

  日期：2013.8.2

  The nickel-catalyzed Suzuki-Miyaura coupling of aryl halides and phenol-derived substrates with aryl boronic acids using green solvents, such as 2-Me-THF and tert-amyl alcohol, is reported. This methodology employs the commercially available and air-stable precatalyst, NiCl2(PCy3)(2), and gives biaryl products in synthetically useful to excellent yields. Using this protocol, bis(heterocyclic) frameworks can be assembled efficiently.