1-benzyl-3-ethylindolin-2-one

• 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: 1-benzyl-3-ethylindolin-2-one
• 英文别名: 1-benzyl-3-ethyl-3H-indol-2-one
• 化学式: C₁₇H₁₇NO
• 分子量: 251.328
• InChiKey: GYNFKSLGRKZFOE-UHFFFAOYSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  3.4
• 重原子数：
  19
• 可旋转键数：
  3
• 环数：
  3.0
• sp3杂化的碳原子比例：
  0.24
• 拓扑面积：
  20.3
• 氢给体数：
  0
• 氢受体数：
  1

反应信息

• 作为反应物：
  描述：

  (2S)-2-[甲氧基(二苯基)甲基]-1-[(E)-2-硝基乙烯基]吡咯烷 、 1-benzyl-3-ethylindolin-2-one 在 正丁基锂 作用下， 以 正己烷 、 甲苯 为溶剂， 反应 2.0h， 以82%的产率得到
  参考文献：
  名称：

  Enantioselective Creation of Quaternary Carbon Centers through Addition- Elimination Reaction: Asymmetric Nitroolefination of 3-Substituted 2-Oxindoles

  摘要：

  Nitroolefination of 3-substituted 2-oxindoles with nitroenamine (5) afforded the corresponding products having quaternary carbon centers with high ee in good yield. Application of this method to concise syntheses of (-)-esermethole (24) and (-)-pseudophrynaminol (28) is described.

  DOI：

  10.3987/com-97-s(n)107
• 作为产物：
  描述：

  1-苄基-3-乙基-1H-吲哚 在 copper(II) perchlorate hexahydrate 、 水 、 C₂₅H₃₀N₂O₂ 、 copper(ll) bromide 作用下， 以 叔丁醇 为溶剂， 以70 %的产率得到1-benzyl-3-ethylindolin-2-one
  参考文献：
  名称：

  铜催化的选择性电子转移使 3 官能化羟基化合物的可切换发散合成成为可能

  摘要：

  3-取代吲哚的氧化重排是合成 2-羟吲哚支架的基本有机转化。然而，这项耗时且复杂的任务使用化学计量化学氧化剂通过双电子氧化产生单一类型的产品。在此，我们报告了一种统一且高效的铜催化选择性单电子转移策略，用于使用空气 (O 2 ) 作为末端氧化剂的 3-取代吲哚的三种氧化反应，提供了一种简化且实用的合成方法来获得 3-羟基- , 3-烷氧基-, 和 3-hygrogenous-2-oxindoles通过3-自由基-2-羟基二氢吲哚中间体。这种铜催化方案在生物 3-功能化羟吲哚衍生物的模块化合成中表现出高化学选择性、良好的官能团耐受性和广泛的应用潜力。

  DOI：

  10.1021/acscatal.2c05881

文献信息

• Enantioselective Synthesis of Quaternary Carbon Stereocenters: Addition of 3-Substituted Oxindoles to Vinyl Sulfone Catalyzed by Pentanidiums
  作者：Lili Zong、Shubo Du、Kek Foo Chin、Chao Wang、Choon-Hong Tan

  DOI：10.1002/anie.201503844

  日期：2015.8.3

  3‐alkyloxindoles to phenyl vinyl sulfone has been demonstrated. This approach allows the construction of 3,3‐dialkyl‐substituted oxindole frameworks with high yield and excellent enantioselectivity (up to 99 %) under simple phase‐transfer conditions. A variety of oxindoles bearing all‐carbon quaternary stereogenic centers were obtained in the presence of 0.25 mol % pentanidium. Meanwhile, practicality was

  证明了戊烷催化的3-烷基氧吲哚向苯乙烯基砜的高对映选择性共轭加成反应。这种方法允许在简单的相转移条件下以高收率和出色的对映选择性（高达99％）构建3,3-二烷基取代的羟吲哚骨架。在0.25摩尔％的戊ani存在下，获得了各种带有全碳四元立体异构中心的羟吲哚。同时，通过两个3,3-二烷基取代的羟吲哚的克级不对称合成说明了实用性。生成的加合物可以通过短合成路线顺利转化为天然产物类似物。
• Visible light induced radical cyclization of <i>o</i>-iodophenylacrylamides: a concise synthesis of indolin-2-one
  作者：Wuheng Dong、Yan Liu、Bei Hu、Kai Ren、Yuyuan Li、Xiaomin Xie、Yuexiu Jiang、Zhaoguo Zhang

  DOI：10.1039/c5cc00072f

  日期：——

  Radical cyclization of o-iodophenylacrylamides afforded indolin-2-ones in good yields.

  将o-碘苯乙烯酰胺进行基团环化反应，得到了良好产率的吲哚-2-酮。
• Expanding the Scope of Cinchona Alkaloid-Catalyzed Enantioselective α-Aminations of Oxindoles: A Versatile Approach to Optically Active 3-Amino-2-oxindole Derivatives
  作者：Tommy Bui、Mar Borregan、Carlos F. Barbas

  DOI：10.1021/jo902039a

  日期：2009.12.4

  A cinchona alkaloid-catalyzed, highly enantioselective, α-amination of oxindoles has been developed. The reaction is general, operationally simple, and affords the desired products in high yields with good to excellent enantioselectivity. Significantly, this study provides a general catalytic method for the construction of a C−N bond at the C3 position of oxindoles as well as for the creation of a

  已经开发了金鸡纳生物碱催化的高对映选择性的羟吲哚α-胺化反应。该反应是一般的，操作简单的，并且以高收率和良好至优异的对映选择性提供了所需的产物。重要的是，这项研究为在羟吲哚的C3位置构建C-N键以及建立含氮的四取代手性中心提供了一种通用的催化方法。
• A simple and eco-friendly method for the aminomethylation of 3-substituted oxindoles via three-component Mannich reaction in aqueous media
  作者：Xiong-Li Liu、Xiao-Mei Zhang、Wei-Cheng Yuan

  DOI：10.1016/j.tetlet.2010.12.060

  日期：2011.2

  A simple and eco-friendly method for the aminomethylation of various 3-substituted oxindoles via three-component Mannich reaction in aqueous media has been established. A variety of oxindoles containing a quaternary carbon center, which comprises an aminomethyl group were obtained smoothly in good yields (up to 93%) with this method. Particularly valuable features, such as employing cheap and readily available formalin as a useful aminomethylation Cl unit and using water as a reaction medium, are embodied in this method. (C) 2010 Elsevier Ltd. All rights reserved.
• Enantioselective Creation of Quaternary Carbon Centers through Addition- Elimination Reaction: Asymmetric Nitroolefination of 3-Substituted 2-Oxindoles
  作者：Kaoru Fuji、Takeo Kawabata、Toshiumi Ohmori、Muhong Shang、Manabu Node

  DOI：10.3987/com-97-s(n)107

  日期：——

  Nitroolefination of 3-substituted 2-oxindoles with nitroenamine (5) afforded the corresponding products having quaternary carbon centers with high ee in good yield. Application of this method to concise syntheses of (-)-esermethole (24) and (-)-pseudophrynaminol (28) is described.