2-(furan-2-yl)-5,6-dimethyl-1H-benzo[d]imidazole | 91954-83-5

• 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: 2-(furan-2-yl)-5,6-dimethyl-1H-benzo[d]imidazole
• 英文别名: 2-(furan-2-yl)-5,6-dimethyl-1H-benzimidazole
• CAS: 91954-83-5
• 化学式: C₁₃H₁₂N₂O
• 分子量: 212.251
• InChiKey: WMUCHUPLOSUDPQ-UHFFFAOYSA-N

物化性质

• 沸点：
  409.5±37.0 °C(Predicted)
• 密度：
  1?+-.0.06 g/cm3(Predicted)

计算性质

• 辛醇/水分配系数(LogP)：
  3
• 重原子数：
  16
• 可旋转键数：
  1
• 环数：
  3.0
• sp3杂化的碳原子比例：
  0.15
• 拓扑面积：
  41.8
• 氢给体数：
  1
• 氢受体数：
  2

反应信息

• 作为反应物：
  描述：

  2-(furan-2-yl)-5,6-dimethyl-1H-benzo[d]imidazole 、 1-萘硼酸 在 cesium bicarbonate 、 tetrakis(actonitrile)copper(I) hexafluorophosphate 、 氧气 、 C₁₇H₁₆N₂O₃ 作用下， 以 二氯甲烷 、 水 为溶剂， 5.0 ℃ 、101.33 kPa 条件下， 以64 %的产率得到
  参考文献：
  名称：

  Atroposelective Chan–Evans–Lam Amination

  摘要：

  摘要 对 C-N 键的异构体进行合成控制是一项重大挑战，而能够形成 C-N 异选择性键的方法却很少见。这是一个问题，因为每种异构体都可能具有截然不同的生物特性。然而，在现有的三种最实用、最适用的经典胺化方法中1) Cu 催化的 Ullmann-Goldberg 反应；2) Pd 催化的 Buchwald-Hartwig 反应；3) Cu 催化的 Chan-Evans-Lam 反应，但没有一种能真正在新形成的 C-N 键上实现异选择性。本文利用简单的铜催化剂和新设计的 PyrOx 手性配体，首次描述了 Chan-Evans-Lam 无选择性胺化反应。这种方法将在不对称合成，特别是药物化学中得到重要应用。

  DOI：

  10.1002/chem.202304378
• 作为产物：
  描述：

  糠醛 、 邻苯二胺 在 bis(acetylacetonate)oxovanadium 、 十六烷基三甲基溴化铵 、 copper(II) bis(trifluoromethanesulfonate) 作用下， 以 水 为溶剂， 反应 20.0h， 以76%的产率得到2-(furan-2-yl)-5,6-dimethyl-1H-benzo[d]imidazole
  参考文献：
  名称：

  Vanadyl Acetylacetonate-Copper (II) Trifluoro Methane Sulfonate Catalyzed Eco-friendly Synthesis of Substituted Benzimidazoles in Aqueous Media

  摘要：

  Various substituted benzimidazoles have been successfully synthesized in aqueous medium by developing VO(acac)(2)-Cu(OTf)(2) catalytic system. A green synthetic protocol has been created in presence of water and cetyltrimethyl ammonium bromide (CTAB) system in an organic solvent free condition. This chemoselective cyclocondensation cumoxidation process occurred in aqueous media. In this suitable method easily synthesized 2-Substituted benzimidazoles with good yields and no 1,2-disubstituted by-products were noticed. Excellent yields, environmentally benign and mild reaction condition, easy purification of the desired products are the main attractive features of this newly devised method.[GRAPHICS]

  DOI：

  10.13005/ojc/360413

文献信息

• Jerchel et al., Justus Liebigs Annalen der Chemie, 1952, vol. 575, p. 162,167
  作者：Jerchel et al.

  DOI：——

  日期：——
• Structure-Based Design of New Dihydrofolate Reductase Antibacterial Agents: 7-(Benzimidazol-1-yl)-2,4-diaminoquinazolines
  作者：Thanh Lam、Mark T. Hilgers、Mark L. Cunningham、Bryan P. Kwan、Kirk J. Nelson、Vickie Brown-Driver、Voon Ong、Michael Trzoss、Grayson Hough、Karen Joy Shaw、John Finn

  DOI：10.1021/jm401204g

  日期：2014.2.13

  A new series of dihydrofolate reductase (DHFR) inhibitors, the 7-(benzimidazol-1-yl)-2,4-diaminoquinazolines, were designed and optimized for antibacterial potency and enzyme selectivity. The most potent inhibitors in this series contained a five-membered heterocycle at the 2-position of, the benzimidazole, leading to highly potent and selective compounds that exploit the differences in the size of a binding pocket adjacent to the NADPH cofactor between the bacterial and human DHFR enzymes. Typical of these compounds is 74(2-thiazol-2-yObenzimidazol-1-yl)-2,4 diaminoquinazoline, which is a potent inhibitor of S. aureus DHFR (K-i = 0.002 nM) with 46700-fold selectivity over human DHFR. This compound also has high antibacterial potency on Gram-positive bacteria with an MIC versus wild type S. aureus of 0.0125 mu g/mL and a MIC versus trimethoprim-resistant S. aureus of 0.25 mu g/mL. In vivo efficacy versus a S. aureus septicemia was demonstrated, highlighting the potential of this new series.
• Benzimidazoles. I. 2-(Heterocyclic Substituted)benzimidazoles
  作者：Roy C. De Selms

  DOI：10.1021/jo01053a063

  日期：1962.6
• Vanadyl Acetylacetonate-Copper (II) Trifluoro Methane Sulfonate Catalyzed Eco-friendly Synthesis of Substituted Benzimidazoles in Aqueous Media
  作者：Samiran Halder

  DOI：10.13005/ojc/360413

  日期：2020.8.28

  Various substituted benzimidazoles have been successfully synthesized in aqueous medium by developing VO(acac)(2)-Cu(OTf)(2) catalytic system. A green synthetic protocol has been created in presence of water and cetyltrimethyl ammonium bromide (CTAB) system in an organic solvent free condition. This chemoselective cyclocondensation cumoxidation process occurred in aqueous media. In this suitable method easily synthesized 2-Substituted benzimidazoles with good yields and no 1,2-disubstituted by-products were noticed. Excellent yields, environmentally benign and mild reaction condition, easy purification of the desired products are the main attractive features of this newly devised method.[GRAPHICS]
• Atroposelective Chan–Evans–Lam Amination
  作者：Vinzenz Thönnißen、Johannes Westphäling、Iuliana L. Atodiresei、Frederic W. Patureau

  DOI：10.1002/chem.202304378

  日期：2024.3.15

  The synthetic control of atropoisomerism along C−N bonds is a major challenge, and methods that allow C−N atroposelective bond formation are rare. This is a problem because each atropoisomer can feature starkly differentiated biological properties. Yet, among the three most practical and applicable classical amination methods available: 1) the Cu‐catalyzed Ullmann–Goldberg reaction, 2) the Pd‐catalyzed Buchwald–Hartwig reaction, and 3) the Cu‐catalyzed Chan–Evans–Lam reaction, none has truly been rendered atroposelective at the newly formed C−N bond. The first ever Chan–Evans–Lam atroposelective amination is herein described with a simple copper catalyst and newly designed PyrOx chiral ligand. This method should find important applications in asymmetric synthesis, in particular for medicinal chemistry.

  摘要 对 C-N 键的异构体进行合成控制是一项重大挑战，而能够形成 C-N 异选择性键的方法却很少见。这是一个问题，因为每种异构体都可能具有截然不同的生物特性。然而，在现有的三种最实用、最适用的经典胺化方法中1) Cu 催化的 Ullmann-Goldberg 反应；2) Pd 催化的 Buchwald-Hartwig 反应；3) Cu 催化的 Chan-Evans-Lam 反应，但没有一种能真正在新形成的 C-N 键上实现异选择性。本文利用简单的铜催化剂和新设计的 PyrOx 手性配体，首次描述了 Chan-Evans-Lam 无选择性胺化反应。这种方法将在不对称合成，特别是药物化学中得到重要应用。