2-(1H-苯并咪唑-1-基)乙醇 | 6340-03-0

• 分子结构分类: 有机化合物 - 有机杂环化合物 - 苯并咪唑类
• 中文名称: 2-(1H-苯并咪唑-1-基)乙醇
• 中文别名: 2-(苯并咪唑-1-基)乙醇；2-(1-苯并咪唑基)乙醇；1-苯并咪唑乙醇
• 英文名称: 2-(1H-benzo[d]imidazol-1-yl)ethanol
• 英文别名: 1-(2-hydroxy-ethyl)-benzimidazole；1-(2-hydroxyethyl)benzimidazole；2-(1H-benzimidazol-1-yl)ethanol；benzimidazol-1-yl-ethanol；2-benzoimidazol-1-yl-ethanol；2-benzimidazol-1-yl-ethanol；2-(benzimidazol-1-yl)ethanol
• CAS: 6340-03-0
• 化学式: C₉H₁₀N₂O
• mdl: MFCD00483391
• 分子量: 162.191
• InChiKey: DJRLXHBFATVHJX-UHFFFAOYSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  0.7
• 重原子数：
  12
• 可旋转键数：
  2
• 环数：
  2.0
• sp3杂化的碳原子比例：
  0.22
• 拓扑面积：
  38
• 氢给体数：
  1
• 氢受体数：
  2

安全信息

• 危险等级：
  IRRITANT
• 海关编码：
  2933990090

反应信息

• 作为反应物：
  描述：

  2-(1H-苯并咪唑-1-基)乙醇 在 咪唑 、 碘 、 三苯基膦 作用下， 以 乙醚 、 乙腈 为溶剂， 反应 2.0h， 以88%的产率得到2-(benzoimidazol-1-yl)-ethyliodide
  参考文献：
  名称：

  Structure−Activity Relationships of 2,N⁶,5‘-Substituted Adenosine Derivatives with Potent Activity at the A_2B Adenosine Receptor

  摘要：

  2, N-6, and 5'-substituted adenosine derivatives were synthesized via alkylation of 2-oxypurine nucleosides leading to 2-arylalkylether derivatives. 2-(3-(Indolyl)ethyloxy)adenosine 17 was examined in both binding and cAMP assays and found to be a potent agonist of the human A(2B)AR. Simplification, altered connectivity, and mimicking of the indole ring of 17 failed to maintain A2BAR potency. Introduction of N-6-ethyl or N-6-guanidino substitution, shown to favor A2BAR potency, failed to enhance potency in the 2-( 3-( indolyl)ethyloxy) adenosine series. Indole 5 ''- or 6 ''-halo substitution was favored at the A(2B)AR, but a 5'-N-ethylcarboxyamide did not further enhance potency. 2-(3 ''-(6 ''-Bromoindolyl)ethyloxy)adenosine 28 displayed an A(2B)AR EC50 value of 128 nM, that is, more potent than the parent 17 (299 nM) and similar to 5'-N-ethylcarboxamidoadenosine (140 nM). Compound 28 was a full agonist at A(2B) and A(2A)ARs and a low efficacy partial agonist at A(1) and A(3)ARs. Thus, we have identified and optimized 2-(2-arylethyl) oxo moieties in AR agonists that enhance A(2B)AR potency and selectivity.

  DOI：

  10.1021/jm061278q
• 作为产物：
  描述：

  苯并咪唑-1-乙酸 在 lithium aluminium tetrahydride 作用下， 以 四氢呋喃 为溶剂， 反应 5.0h， 以76%的产率得到2-(1H-苯并咪唑-1-基)乙醇
  参考文献：
  名称：

  Structure−Activity Relationships of 2,N⁶,5‘-Substituted Adenosine Derivatives with Potent Activity at the A_2B Adenosine Receptor

  摘要：

  2, N-6, and 5'-substituted adenosine derivatives were synthesized via alkylation of 2-oxypurine nucleosides leading to 2-arylalkylether derivatives. 2-(3-(Indolyl)ethyloxy)adenosine 17 was examined in both binding and cAMP assays and found to be a potent agonist of the human A(2B)AR. Simplification, altered connectivity, and mimicking of the indole ring of 17 failed to maintain A2BAR potency. Introduction of N-6-ethyl or N-6-guanidino substitution, shown to favor A2BAR potency, failed to enhance potency in the 2-( 3-( indolyl)ethyloxy) adenosine series. Indole 5 ''- or 6 ''-halo substitution was favored at the A(2B)AR, but a 5'-N-ethylcarboxyamide did not further enhance potency. 2-(3 ''-(6 ''-Bromoindolyl)ethyloxy)adenosine 28 displayed an A(2B)AR EC50 value of 128 nM, that is, more potent than the parent 17 (299 nM) and similar to 5'-N-ethylcarboxamidoadenosine (140 nM). Compound 28 was a full agonist at A(2B) and A(2A)ARs and a low efficacy partial agonist at A(1) and A(3)ARs. Thus, we have identified and optimized 2-(2-arylethyl) oxo moieties in AR agonists that enhance A(2B)AR potency and selectivity.

  DOI：

  10.1021/jm061278q

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 protocol for N-alkylation of purine, pyrimidine and azole derivatives via alcohols using Ph 3 P/I 2 : simple route for carboacyclic nucleoside synthesis
  作者：Mohammad Navid Soltani Rad、Faezeh Soleimani

  DOI：10.1016/j.tet.2016.06.069

  日期：2016.8

  efficient synthetic protocol for the one-pot N-alkylation of nucleobases and their related N-heterocycles via alcohols utilizing the combination of PPh3 and I2 is reported. In this protocol purine, pyrimidine and azole derivatives underwent the N-alkylation reaction with diverse primary alcohols using Ph3P/I2 in the presence of Et3N-K2CO3 in anhydrous DMF to give the N-alkyl adducts (carboacyclic nucleosides)

  据报道，利用PPh 3和I 2的组合，通过醇进行一锅N-烷基化核碱基及其相关的N-杂环的简单有效的合成方案。在这个协议中嘌呤，嘧啶和吡咯衍生物经历与使用pH不同的伯醇的N-烷基化反应3 P / I 2的Et的存在3 N-K 2 CO 3在无水DMF，得到Ñ-烷基加合物（碳环核苷）的收率很高（高达90％）。讨论了该反应中一些参数的影响，包括溶剂类型，碱，试剂和温度。此外，该方案已证明对二醇中伯羟基相对于仲羟基具有良好的选择性。
• Synthesis and Aqueous Chemistry of α-Acetoxy-<i>N</i>-nitrosomorpholine:  Reactive Intermediates and Products
  作者：Charles N. Zink、Hyun-Joong Kim、James C. Fishbein

  DOI：10.1021/jo051936z

  日期：2006.1.1

  reactivity of 7 at neutral pH compared with its carbon analogue, α-acetoxy-N-nitrosopiperidine, is also consistent with the electronic effects expected for such a reaction. The dinitrophenylhydrazones derived from pH-independent and acid-catalyzed reactions are identical in kind and quantity, within experimental error, to those observed in the decay of α-hydroxy-N-nitrosomorpholine. Decay of 7 in the presence

  α-乙酰氧基-N-亚硝基吗啉（7）是通过N-乙酰基吗啉在甲醇中的阳极氧化反应开始合成的。经过氰化物为甲氧基的交换和水解后，N-亚硝基吗啉酸的55％收率比我们最初的10步法提高了约10倍，并且很容易转化为7。在1至12的pH范围内，在25°C和1 M离子强度下在水性介质中7的分解动力学进行了研究。在所有pH值下反应均表现出良好的一级动力学。k 0的对数，针对pH的与缓冲液无关的分解速率常数表明，pH无关的反应在中性pH区域占主导，而酸催化和碱催化的反应分别在低pH和高pH区域占主导。在醋酸盐离子浓度增加的情况下，在中性pH下反应会导致k obsd值降低至一个明显的极限值，该值与通过捕获N和竞争性碱催化水合N引起的普通离子抑制相一致。-亚硝基亚胺离子中间体。7在中性pH下的反应活性比其碳类似物α-乙酰氧基N小100倍-亚硝基哌啶也与这种反应预期的电子效应相一致。在实验误差范围内，与pH无关和酸
• Triphenylphosphine-free approach for one-pot N-alkylation of purine, pyrimidine, and azole derivatives with alcohols using P2O5/KI: A facile and selective route to access carboacyclic nucleosides
  作者：Somayeh Behrouz、Mohammad Navid Soltani Rad、Samira Ahmadi

  DOI：10.1016/j.tet.2019.130499

  日期：2019.9

  A facile, selective, and mild synthetic approach for one-pot N-alkylation of nucleobases and other related N-heterocycles via alcohols, using a mixture of P2O5 and KI is described. The reaction of structurally diverse purines, pyrimidines, and/or azoles with primary alcohols with the use of P2O5/KI and basic mixture of Et3N/K2CO3 in refluxing DMF affords the corresponding N-alkyl derivatives (carboacyclic

  描述了一种使用P 2 O 5和KI的混合物通过醇通过一锅法对核碱基和其他相关N-杂环进行N-烷基化的简便，选择性和温和的合成方法。使用P 2 O 5 / KI和Et 3 N / K 2 CO 3的碱性混合物，使结构不同的嘌呤，嘧啶和/或唑与伯醇反应在回流中，DMF以良好至合理的产率得到相应的N-烷基衍生物（碳环核苷）。评估了包括溶剂，碱，温度和底物/试剂比率的不同参数对反应进程的影响。仲和叔醇不能与核碱基反应。当前方案的主要优点是形成水溶性副产物，其中提供了简单的后处理和纯化过程。
• Synthesis of N-heterocyclic nitrenium (NHN) ions and related donor systems: Coordination with d10-metal ions
  作者：Sangeeta Yadav、Rajesh Deka、Saravanan Raju、Harkesh B. Singh

  DOI：10.1016/j.ica.2019.01.024

  日期：2019.3

  three new NNN- and CNC type N-heterocyclic nitrenium (NHN) ion based pincer ligands is reported from 1,3-di-(2′-bromoethyl)-triazolium bromide (5). The reaction of 5 with ammonium hexafluorophosphate followed by two equivalent of pyrrolidine/diethylamine afforded NHN ions (10a and 10b). The reaction of 5 with N-butylbenzimidazole (6) afforded nitrenium ion 7, where the chelating arms have benzimidazole

  摘要据报道，由1,3-二-（2'-溴乙基）-三唑鎓溴化物合成了三种新的NNN和CNC型N-杂环nitr离子（NHN）的钳形配体（5）。5与六氟磷酸铵的反应，然后与两当量的吡咯烷/二乙胺反应，得到NHN离子（10a和10b）。5与N-丁基苯并咪唑（6）的反应得到了nitr离子7，其中螯合臂具有基于苯并咪唑的卡宾碳。为了合成在螯合臂中含有软碲供体的杂化NHN配体，首先使1-（2'-溴乙基）-苯并三唑与原位生成的NaTePh反应，得到碲化的苯并三唑（13）。但是，当化合物13用甲基碘处理时，在碲中心发生意外的甲基化反应，得到化合物14。7与Hg（OAc）2的反应和10a与CuI的反应分别得到配合物8和11。这两种络合物均通过NMR（1H，13C），HRMS和CHN分析进行表征。自然键序（NBO）计算和分子中的原子（AIM）分析充分证实了三唑鎓N原子与金属中心之间相互作用的存在。在室温下，在叔丁醇