N-<3-Brom-benzoyl>-imidazol | 91240-83-4

• 分子结构分类: 有机化合物 - 苯类化合物 - 苯和取代衍生物
• 英文名称: N-<3-Brom-benzoyl>-imidazol
• 英文别名: 1-(3-bromo-benzoyl)-1H-imidazole；(3-Bromophenyl)-imidazol-1-ylmethanone
• CAS: 91240-83-4
• 化学式: C₁₀H₇BrN₂O
• 分子量: 251.082
• InChiKey: ISTFHIMLQIEINV-UHFFFAOYSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  2.2
• 重原子数：
  14
• 可旋转键数：
  1
• 环数：
  2.0
• sp3杂化的碳原子比例：
  0.0
• 拓扑面积：
  34.9
• 氢给体数：
  0
• 氢受体数：
  2

反应信息

• 作为反应物：
  描述：

  N-<3-Brom-benzoyl>-imidazol 在 1,2,3,4,5,6,7,8-八硫杂环辛烷 、 tetraphosphorus decasulfide 、 六甲基二硅氧烷 、 三乙胺 、 magnesium chloride 作用下， 以 四氢呋喃 、 5,5-dimethyl-1,3-cyclohexadiene 为溶剂， 反应 6.0h， 生成 5-(3-bromophenyl)-3H-1,2-dithiole-3-thione
  参考文献：
  名称：

  Synthesis of Dithiolethiones and Identification of Potential Neuroprotective Agents via Activation of Nrf2-Driven Antioxidant Enzymes

  摘要：

  Oxidative stress is implicated in the pathogenesis of a wide variety of neurodegenerative disorders, and accordingly, dietary supplement of exogenous antioxidants or/and upregulation of the endogenous antioxidant defense system are promising for therapeutic intervention or chemoprevention of neurodegenerative diseases. Nrf2, a master regulator of the cellular antioxidant machinery, cardinally participates in the transcription of cytoprotective genes against oxidative/electrophilic stresses. Herein, we report the synthesis of 59 structurally diverse dithiolethiones and evaluation of their neuroprotection against 6-hydroxydopamine- or H2O2 -induced oxidative damages in PC12 cells, a neuron-like rat pheochromocytoma cell line. Initial screening identified compounds 10 and 11 having low cytotoxicity but conferring remarkable protection on PC12 cells from oxidative-mediated damages. Further studies demonstrated that both compounds upregulated a battery of antioxidant genes as well as corresponding genes' products. Significantly, silence of Nrf2 expression abolishes cytoprotection of 10 and 11, indicating targeting Nrf2 activation is pivotal for their cellular functions. Taken together, the two lead compounds discovered here with potent neuroprotective functions against oxidative stress via Nrf2 activation merit further development as therapeutic or chemopreventive candidates for neurodegenerative disorders.

  DOI：

  10.1021/acs.jafc.9b06360
• 作为产物：
  描述：

  间溴苯甲酸 、 N,N'-羰基二咪唑 反应 2.0h， 生成 N-<3-Brom-benzoyl>-imidazol
  参考文献：
  名称：

  光氧化还原和卡宾联合催化从羧酸合成 α-氨基酮

  摘要：

  α-氨基酮部分存在于许多药理活性分子中，但它们的合成具有挑战性。在此，我们报告了一种温和、操作简单的方法，通过卡宾和光氧化还原催化的结合，将羧酸中的 α-氨基 C(sp 3 )-H 键直接酰化。具体来说，广泛的羧酸、一类原料化学品和容易获得的N之间的交叉偶联反应-烷基苯胺通过单电子N-杂环卡宾催化结合光催化提供了获得结构多样的α-氨基酮的途径。该方法具有广泛的底物范围，并与广泛的官能团兼容。为了证明该方法的潜在应用，我们对一种 α-氨基酮产品进行了进一步的转化。

  DOI：

  10.1021/acscatal.1c05815

文献信息

• Light-Driven <i>N</i>-Heterocyclic Carbene Catalysis Using Alkylborates
  作者：Yukiya Sato、Yamato Goto、Kei Nakamura、Yusuke Miyamoto、Yuto Sumida、Hirohisa Ohmiya

  DOI：10.1021/acscatal.1c04153

  日期：2021.11.5

  a state-of-the-art methodology enabling radical–radical coupling. The catalytic process involves forming an acyl azolium intermediate from the NHC catalyst and an acyl donor, followed by single electron reduction of this key intermediate, which is largely dependent on the photoredox catalyst. We designed a radical NHC catalysis in which the direct photoexcitation of a borate to form a high reducing

  自由基-自由基偶联是两种不同自由基物种之间的选择性反应，有助于连接大单元的方法。光驱动N-杂环卡宾（NHC）有机催化被认为是一种最先进的方法，能够实现自由基-自由基偶联。催化过程包括从 NHC 催化剂和酰基供体形成酰基唑中间体，然后对该关键中间体进行单电子还原，这在很大程度上取决于光氧化还原催化剂。我们设计了一种自由基 NHC 催化，其中硼酸盐的直接光激发形成高还原剂促进了单电子还原事件。硼酸盐为单电子转移过程产生烷基自由基以完成自由基-自由基偶联。除了烯烃与烷基硼酸盐和酰基咪唑的自由基中继型烷基酰化外，该协议还可以实现烷基硼酸盐和酰基咪唑之间的交叉偶联，从而提供范围广泛的酮。
• Novel Synthesis of Dihydroisoxazoles by p-TsOH-Participated 1,3-Dipolar Cycloaddition of Dipolarophiles withα-Nitroketones
  作者：Caiyun Yang、Sirou Hu、Xinhui Pan、Ke Yang、Ke Zhang、Qingguang Liu、Xiaobing Xin、Jie Li、Jinhui Wang、Xiaoda Yang

  DOI：10.3390/molecules28062565

  日期：——

  This article reports in detail a method for the synthesis of 3-benzoxoxazoline by the reaction of alkenes (alkynes) and a variety of α-nitroketones in the presence of p-TsOH. The scope of alkenes is broad, including different alkenes and the alkyne. This reaction provides a convenient and efficient synthetic method of 3-benzoylisoxazolines.

  本文详细报道了烯烃（炔烃）与多种α-硝基酮在p-TsOH存在下反应合成3-苯并恶唑啉的方法。烯烃的范围很广，包括不同的烯烃和炔烃。该反应提供了一种简便高效的3-苯甲酰异恶唑啉的合成方法。
• Photoinduced Electron Transfer from Xanthates to Acyl Azoliums: Divergent Ketone Synthesis via <i>N</i>‐Heterocyclic Carbene Catalysis
  作者：Chang‐Yin Tan、Minseok Kim、Sungwoo Hong

  DOI：10.1002/anie.202306191

  日期：2023.8.7

  A versatile NHC-catalyzed method has been developed for synthesizing ketones from alcohols and carboxylic acid derivatives through SET (single electron transfer) between photoexcited xanthates and acyl azoliums. This approach further facilitates the generation of structurally diverse cross-coupled ketones by incorporating alkenes and enynes.

  开发了一种通用的 NHC 催化方法，用于通过光激发黄原酸盐和酰基唑鎓之间的 SET（单电子转移）从醇和羧酸衍生物合成酮。这种方法通过结合烯烃和烯炔进一步促进了结构多样的交叉偶联酮的生成。
• Energy-Transfer-Enabled Radical Acylation Using Free Alkyl Boronic Acids through Photo and NHC Dual Catalysis
  作者：Wan-Cong Liu、Xiang Zhang、Lin Chen、Rong Zeng、Yuan-Hang Tian、En-Dian Ma、Ya-Peng Wang、Bin Zhang、Jun-Long Li

  DOI：10.1021/acscatal.3c06027

  日期：2024.3.1

  for ketone synthesis. As an important coupling partner, bench-stable and commercially available alkyl boronic acids are widely used in transition metal catalysis, but they are rarely utilized as radical precursors for acylative coupling reactions. Herein, we reported an energy-transfer-enabled radical acylation using free alkyl boronic acids via NHC/photo dual catalysis. This protocol could efficiently

  交叉偶联反应作为最流行的酮合成方案之一而广受好评。作为重要的偶联伙伴，实验室稳定且市售的烷基硼酸广泛用于过渡金属催化，但很少用作酰化偶联反应的自由基前体。在此，我们报道了通过 NHC/光双催化使用游离烷基硼酸实现能量转移的自由基酰化。该方案可以有效促进烷基硼酸与酰基咪唑之间的铃木型交叉偶联以及烯烃的多组分烷基酰化，从而产生具有结构多样性的各种酮。此外，酮产品可以很容易地转化为大量结构有趣的精细化学品。初步机理研究揭示了独特的自由基反应机理。
• Indium-mediated one-pot synthesis of benzoxazoles or oxazoles from 2-nitrophenols or 1-aryl-2-nitroethanones
  作者：Jung June Lee、Jihye Kim、Young Moo Jun、Byung Min Lee、Byeong Hyo Kim

  DOI：10.1016/j.tet.2009.08.059

  日期：2009.10

  One-pot reduction-triggered heterocyclizations from 2-nitrophenols to benzoxazoles and from 1-aryl-2-nitroethanones to oxazoles were investigated. In the presence of indium/AcOH in benzene at reflux, 2-nitrophenols and R-C(OMe)(3) (R=H, Me, Ph) produced excellent yields of corresponding benzoxazoles within an hour. Similarly, 1-aryl-2-nitroethanones and Ph-C(OMe)(3) in the presence of indiurn/AcOH in acetonitrile transformed into the corresponding oxazoles with good yields. (c) 2009 Elsevier Ltd. All rights reserved.