2-methyl-4-nitro-1-phenethyl-1H-imidazole | 195046-60-7

• 分子结构分类: 有机化合物 - 有机杂环化合物 - 唑类
• 英文名称: 2-methyl-4-nitro-1-phenethyl-1H-imidazole
• 英文别名: 2-Methyl-4-nitro-1-(2-phenylethyl)imidazole
• CAS: 195046-60-7
• 化学式: C₁₂H₁₃N₃O₂
• 分子量: 231.254
• InChiKey: SAEKBEBRCNIVNC-UHFFFAOYSA-N

物化性质

• 熔点：
  116.2 °C
• 沸点：
  435.4±28.0 °C(Predicted)
• 密度：
  1.22±0.1 g/cm3(Predicted)

计算性质

• 辛醇/水分配系数(LogP)：
  2.1
• 重原子数：
  17
• 可旋转键数：
  3
• 环数：
  2.0
• sp3杂化的碳原子比例：
  0.25
• 拓扑面积：
  63.6
• 氢给体数：
  0
• 氢受体数：
  3

反应信息

• 作为反应物：
  描述：

  2-methyl-4-nitro-1-phenethyl-1H-imidazole 在 bis-triphenylphosphine-palladium(II) chloride 、 potassium carbonate 、 silver carbonate 、 三甲基乙酸 作用下， 以 N,N-二甲基乙酰胺 为溶剂， 反应 14.0h， 以97%的产率得到3-methyl-1-nitro-5,6-dihydroimidazo[5,1-a]isoquinoline
  参考文献：
  名称：

  Transition-Metal-Catalyzed Arylation of Nitroimidazoles and Further Transformations of Manipulable Nitro Group

  摘要：

  Pd- or Ni-catalyzed CH arylation of 4-nitroimidazole derivatives directed by a manipulable nitro group was developed. The reaction tolerates a wide range of substituted aryl halides and 4-nitroimidazoles. The experiments indicated that the nitro group has influence on regioselectivity of the reaction. In addition, we have shown that the efficiency of the SuzukiMiyaura cross-coupling reaction of nitroimidazoles is slightly lower in comparison to the direct CH arylation. The exploration of the chemical potential of the nitro group and a putative reaction mechanism are discussed.

  DOI：

  10.1021/jo5025927
• 作为产物：
  描述：

  2-甲基-4-硝基咪唑 、 乙基溴苯 在 potassium carbonate 作用下， 以 N,N-二甲基甲酰胺 为溶剂， 反应 8.0h， 以93%的产率得到2-methyl-4-nitro-1-phenethyl-1H-imidazole
  参考文献：
  名称：

  Transition-Metal-Catalyzed Arylation of Nitroimidazoles and Further Transformations of Manipulable Nitro Group

  摘要：

  Pd- or Ni-catalyzed CH arylation of 4-nitroimidazole derivatives directed by a manipulable nitro group was developed. The reaction tolerates a wide range of substituted aryl halides and 4-nitroimidazoles. The experiments indicated that the nitro group has influence on regioselectivity of the reaction. In addition, we have shown that the efficiency of the SuzukiMiyaura cross-coupling reaction of nitroimidazoles is slightly lower in comparison to the direct CH arylation. The exploration of the chemical potential of the nitro group and a putative reaction mechanism are discussed.

  DOI：

  10.1021/jo5025927

文献信息

• Highly efficient protocol for one-pot N-alkylation of nucleobases using alcohols in bmim[Br]: a rapid route to access acyclic nucleosides
  作者：Mohammad Navid Soltani Rad、Somayeh Behrouz、Elham Zarenezhad、Narjes Kaviani

  DOI：10.1007/s13738-015-0633-9

  日期：2015.9

  Highly efficient protocol for one-pot N-alkylation of nucleobases using alcohol in ionic liquid media as a straightforward route to access acyclic nucleoside was described. In this protocol purine, pyrimidine as well as azole derivatives underwent the N-alkylation reaction with primary or secondary alcohols using TsCl/TEA/K2CO3 in bmim[Br] to afford the products in good-to-excellent yields. The influence of factors in this method including the type of ionic liquid, base and sulfonating agents was discussed. The current method showed an appropriate selectivity in reaction with primary alcohols in comparison with secondary alcohols. This protocol is mild, safe and easy to apply; moreover, it is quite compatible with eco-friendly and green chemistry protocols, since the exploitation of toxic and hazardous materials such as DMF and alkyl halides has been prevented.

  描述了一种在离子液体介质中使用醇对核苷碱基进行高效一锅法N-烷基化的协议，作为获取无环核苷的直接途径。在此协议中，嘌呤、嘧啶以及唑类衍生物与一级或二级醇在TsCl/TEA/K2CO3于bmim[Br]中进行N-烷基化反应，得到良好至极佳产率的产物。讨论了该方法中包括离子液类型、碱和磺化剂等因素的影响。当前方法在反应中对一级醇显示出适当的优先选择性，相较于二级醇。该协议温和、安全且易于应用；此外，由于避免了使用如DMF和烷基卤等有毒及危险材料，它与生态友好和绿色化学协议高度兼容。
• One-Pot Synthesis of N-Alkyl Purine, Pyrimidine and Azole Derivatives from Alcohols using Ph3P/CCl4: A Rapid Route to Carboacyclic Nucleoside Synthesis
  作者：Mohammad Soltani Rad、Ali Khalafi-Nezhad、Somayeh Behrouz、Zeinab Asrari、Marzieh Behrouz、Zohreh Amini

  DOI：10.1055/s-0029-1216887

  日期：2009.9

  A facile and efficient method for one-pot N-alkylation of nucleobases and azole derivatives from alcohols using triphenylphosphine in carbon tetrachloride is described. In this method, treatment of alcohols with a mixture of triphenylphosphine, carbon tetrachloride, nucleobase or azole derivatives and potassium carbonate in the presence of catalytic amounts of tetra-n-butylammonium iodide (TBAI) in

  描述了一种在三氯化碳中使用三苯基膦对醇进行的核碱基和唑衍生物的一锅N-烷基化的简便有效方法。在这种方法中，在催化量的四正丁基碘化铵（TBAI）存在下，在回流的N，N-二甲基甲酰胺中，用三苯基膦，四氯化碳，核碱基或唑衍生物和碳酸钾的混合物处理醇，得到了相应的N-烷基衍生物，收率高。该方法学对于各种结构多样的伯醇是高效的，并且也可用于含有酸性NH键的其他N-杂环的N-烷基化。 碳环核苷-N-烷基化-核碱基-醇-三苯膦-四氯化碳-碳酸钾
• Copper-catalyzed direct C–H arylselenation of 4-nitro-pyrazoles and other heterocycles with selenium powder and aryl iodides. Access to unsymmetrical heteroaryl selenides
  作者：Michał Jakubczyk、Satenik Mkrtchyan、Izabela D. Madura、Paulina H. Marek、Viktor O. Iaroshenko

  DOI：10.1039/c9ra05004c

  日期：——

  A one-pot, Cu-catalyzed direct C–H arylselenation protocol using elemental Se and aryl iodides was developed for nitro-substituted, N-alkylated pyrazoles, imidazoles and other heterocycles including 4H-chromen-4-one. This general and concise method allows one to obtain a large number of unsymmetrical heteroaryl selenides bearing a variety of substituents. The presence of the nitro group was confirmed

  针对硝基取代的N-烷基化吡唑、咪唑和包括 4 H -chromen-4-one 在内的其他杂环，开发了一种使用元素 Se 和芳基碘化物的一锅铜催化直接 C-H 芳基硒化方案。这种通用而简洁的方法允许获得大量带有多种取代基的不对称杂芳基硒化物。确认硝基的存在对于 C-H 活化至关重要，也可用于进一步的功能化和操作。还使用开发的合成方案合成了几个杂环化苯并硒嗪的例子。