(E)-methyl 2-(1-ethyl-2-oxoindolin-3-ylidene)acetate | 1416897-70-5

• 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: (E)-methyl 2-(1-ethyl-2-oxoindolin-3-ylidene)acetate
• CAS: 1416897-70-5
• 化学式: C₁₃H₁₃NO₃
• 分子量: 231.251
• InChiKey: LJFFILXXURABFQ-CSKARUKUSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  1.61
• 重原子数：
  17.0
• 可旋转键数：
  2.0
• 环数：
  2.0
• sp3杂化的碳原子比例：
  0.23
• 拓扑面积：
  46.61
• 氢给体数：
  0.0
• 氢受体数：
  3.0

反应信息

• 作为反应物：
  描述：

  邻苯二胺 、 (E)-methyl 2-(1-ethyl-2-oxoindolin-3-ylidene)acetate 在 亚硝酸特丁酯 作用下， 以 乙腈 为溶剂， 以70 %的产率得到methyl (Z)-2-(1H-benzo[d][1,2,3]triazol-1-yl)-2-(1-ethyl-6-nitro-2-oxoindolin-3-ylidene)acetate
  参考文献：
  名称：

  tert‐Butyl Nitrite Promoted Visible‐Light‐Induced Steric‐Hindrance‐Regulated Concurrent Cross‐Coupling and Regioselective Nitration of 3‐Alkylidene‐2‐oxindoles

  摘要：

  A tert‐butyl nitrite (TBN) promoted visible‐light‐induced one‐pot C−N cross coupling reaction of 3‐alkylidene‐2‐oxindoles with benzene‐1,2‐diamine was explored. Simultaneously, the indoline motif of 3‐alkylidene‐2‐oxindoles as well as 3‐ylidene oxindoles are regioselectively nitrated at the C‐6 position by in‐situ formed NO2 radical. (E)‐3‐(2‐(aryl)‐2‐oxoethylidene)oxindole and (E)‐3‐ylidene oxindole produce distinct nitrated diastereomeric coupling products, a phenomenon influenced by the steric bulk of the functional group. The experimental findings suggest the potential involvement of a radical pathway in this reaction.

  DOI：

  10.1002/adsc.202301159
• 作为产物：
  描述：

  溴乙酸甲酯 、 1-乙基-1H-吲哚-2,3-二酮 在 吗啉 、 三苯基膦 作用下， 以90 %的产率得到(E)-methyl 2-(1-ethyl-2-oxoindolin-3-ylidene)acetate
  参考文献：
  名称：

  tert‐Butyl Nitrite Promoted Visible‐Light‐Induced Steric‐Hindrance‐Regulated Concurrent Cross‐Coupling and Regioselective Nitration of 3‐Alkylidene‐2‐oxindoles

  摘要：

  A tert‐butyl nitrite (TBN) promoted visible‐light‐induced one‐pot C−N cross coupling reaction of 3‐alkylidene‐2‐oxindoles with benzene‐1,2‐diamine was explored. Simultaneously, the indoline motif of 3‐alkylidene‐2‐oxindoles as well as 3‐ylidene oxindoles are regioselectively nitrated at the C‐6 position by in‐situ formed NO2 radical. (E)‐3‐(2‐(aryl)‐2‐oxoethylidene)oxindole and (E)‐3‐ylidene oxindole produce distinct nitrated diastereomeric coupling products, a phenomenon influenced by the steric bulk of the functional group. The experimental findings suggest the potential involvement of a radical pathway in this reaction.

  DOI：

  10.1002/adsc.202301159

文献信息

• Rhodium(III)-Catalyzed <i>N</i>-Nitroso-Directed C–H Olefination of Arenes. High-Yield, Versatile Coupling under Mild Conditions
  作者：Baoqing Liu、Yang Fan、Yang Gao、Chao Sun、Cheng Xu、Jin Zhu

  DOI：10.1021/ja3099245

  日期：2013.1.9

  elusive substrates (e.g., an unactivated olefin, 1-octene). Comprehensive mechanistic studies on the electronic effect, deuterium exchange, kinetic isotope effect, kinetic profile, and numerous Rh(III) complexes have established [RhCp*](2+) as the catalyst resting state, electrophilic C-H activation as the turnover-limiting step, and a five-membered rhodacycle as a catalytically competent intermediate.

  N-亚硝基化合物是一类通用的有机结构，可通过已证明的反应性方便地访问各种合成有用的结构。我们在此报告了用于芳烃邻烯烃化的 Rh(III) 催化 N-亚硝基定向方法的发展。N-亚硝基赋予的高反应性转化为温和的反应条件、高反应产率和难以捉摸的底物（例如未活化的烯烃、1-辛烯）的合成相容性。对电子效应、氘交换、动力学同位素效应、动力学曲线和众多 Rh(III) 配合物的综合机理研究已经确定 [RhCp*](2+) 作为催化剂静止状态，亲电 CH 活化作为转换限制步骤, 和五元红环作为催化中间体。将 N-亚硝基部分精细化为胺官能团的能力为这种可转化的导向基团提供的无数合成可能性提供了一个开创性的例子。