N-benzyl-1-methyl-1H-benzo[d]imidazol-2-amine | 27097-08-1

• 分子结构分类: 有机化合物 - 有机杂环化合物 - 苯并咪唑类
• 英文名称: N-benzyl-1-methyl-1H-benzo[d]imidazol-2-amine
• 英文别名: 1-Methyl-2-benzylamino-benzimidazol；N-benzyl-1-methylbenzimidazol-2-amine
• CAS: 27097-08-1
• 化学式: C₁₅H₁₅N₃
• mdl: MFCD05240083
• 分子量: 237.304
• InChiKey: OTKCOPCTTAKCKG-UHFFFAOYSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  3.1
• 重原子数：
  18
• 可旋转键数：
  3
• 环数：
  3.0
• sp3杂化的碳原子比例：
  0.133
• 拓扑面积：
  29.8
• 氢给体数：
  1
• 氢受体数：
  2

反应信息

• 作为反应物：
  描述：

  N-benzyl-1-methyl-1H-benzo[d]imidazol-2-amine 在 十二羰基三钌 、 氘代叔丁醇 作用下， 反应 24.0h， 生成 N-(dideutero(phenyl)methyl)-N-deutero-1-methyl-1H-benzo[d]-imidazol-2-amine
  参考文献：
  名称：

  富电子和贫电子氮原子的选择性Ru（0）催化氘代

  摘要：

  使用t的高选择性Ru 3（CO）12催化氘化方法-以BuOD作为氘源。富电子和贫电子的N-杂芳烃，例如吲哚，氮杂吲哚，脱氮杂嘌呤，苯并咪唑，喹啉，异喹啉和吡啶，在特定位置具有较高的氘选择性；在大多数情况下，氘的掺入量接近理论上可能的值。为了进一步提高氘化程度，可以执行几个反应方案的循环，与已建立的方案相比，使用较少量的氘化剂可得到更高的氘化程度。事实证明，相同的方案原则上可以应用于对放射性标记生物活性分子很重要的tri化反应。

  DOI：

  10.1021/jo300219v
• 作为产物：
  描述：

  嘧啶-4-甲醛 在 三氟化硼乙醚 、 间氯过氧苯甲酸 作用下， 以 二氯甲烷 、 甲苯 为溶剂， 反应 17.0h， 生成 N-benzyl-1-methyl-1H-benzo[d]imidazol-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

文献信息

• Metal-Free Synthesis of Heteroaryl Amines or Their Hydrochlorides via an External-Base-Free and Solvent-Free C–N Coupling Protocol
  作者：Guang-Gao Fan、Bo-Wen Jiang、Wei Sang、Hua Cheng、Rui Zhang、Bao-Yi Yu、Ye Yuan、Cheng Chen、Francis Verpoort

  DOI：10.1021/acs.joc.1c01467

  日期：2021.11.5

  Herein, a metal-free and solvent-free protocol was developed for the C–N coupling of heteroaryl halides and amines, which afforded numerous heteroaryl amines or their hydrochlorides without any external base. Further investigations elucidated that the basicity of amines and specific interactions derived from the X-ray crystallography analysis of 3j′·HCl played pivotal roles in the reactions. Moreover

  在此，开发了一种无金属和无溶剂的方案，用于杂芳基卤化物和胺的 C-N 偶联，在没有任何外部碱的情况下提供了许多杂芳基胺或其盐酸盐。进一步的研究表明，胺的碱性和源自3j'·HCl的 X 射线晶体学分析的特定相互作用在反应中起关键作用。此外，该协议可扩展到克级并适用于药物分子，这证明了其进一步应用的实用价值。
• Transition‐Metal‐Free Base‐Controlled C−N Coupling Reactions: Selective Mono<i>Versus</i>Diarylation of Primary Amines with 2‐Chlorobenzimidazoles
  作者：Wei Sang、Yan‐Yan Gong、Hua Cheng、Rui Zhang、Ye Yuan、Guang‐Gao Fan、Zhi‐Qin Wang、Cheng Chen、Francis Verpoort

  DOI：10.1002/adsc.202001365

  日期：2021.3.2

  Herein, a base‐controlled protocol was developed for the C−N coupling of primary amines and 2‐chlorobenzimidazoles, affording a handful of secondary or tertiary amines in a selective fashion. Moreover, this protocol was realized under transition‐metal‐free conditions, and the variation of the base from iPr2NH to LiOtBu completely switched the selectivity from monoarylation to diarylation. Further investigations

  本文中，开发了一种碱控制的方案，用于伯胺和2-氯苯并咪唑的C-N偶联，以选择性方式提供了少量仲胺或叔胺。此外，该方案是在无过渡金属条件下实现的，碱从i Pr 2 NH到LiO t Bu的变化完全将选择性从单芳基化转变为二芳基化。进一步的研究表明，所用碱的种类，内在的碱性和数量极大地影响了这些反应。
• SIMONOV A. M.; KOMISSAROV V. N., XIMIYA GETEROTSIKL. SOEDIN. <KGSS-AQ>, 1975, HO 6, 826-828
  作者：SIMONOV A. M.、 KOMISSAROV V. N.

  DOI：——

  日期：——
• Mechanistic Investigations and Substrate Scope Evaluation of Ruthenium-Catalyzed Direct sp³ Arylation of Benzylic Positions Directed by 3-Substituted Pyridines
  作者：Navid Dastbaravardeh、Karl Kirchner、Michael Schnürch、Marko D. Mihovilovic

  DOI：10.1021/jo302547q

  日期：2013.1.18

  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.
• Selective Ru(0)-Catalyzed Deuteration of Electron-Rich and Electron-Poor Nitrogen-Containing Heterocycles
  作者：Birgit Gröll、Michael Schnürch、Marko D. Mihovilovic

  DOI：10.1021/jo300219v

  日期：2012.5.4

  A highly selective Ru3(CO)12-catalyzed deuteration method using t-BuOD as deuterium source is reported. Electron-rich and electron-poor N-heteroarenes such as indoles, azaindoles, deazapurines, benzimidazole, quinolines, isoquinolines, and pyridines were efficiently deuterated at specific positions with high selectivity; in most cases, deuterium incorporation was close to the theoretically possible

  使用t的高选择性Ru 3（CO）12催化氘化方法-以BuOD作为氘源。富电子和贫电子的N-杂芳烃，例如吲哚，氮杂吲哚，脱氮杂嘌呤，苯并咪唑，喹啉，异喹啉和吡啶，在特定位置具有较高的氘选择性；在大多数情况下，氘的掺入量接近理论上可能的值。为了进一步提高氘化程度，可以执行几个反应方案的循环，与已建立的方案相比，使用较少量的氘化剂可得到更高的氘化程度。事实证明，相同的方案原则上可以应用于对放射性标记生物活性分子很重要的tri化反应。