1,3-bis(4-sulfobenzyl)-1H-imidazol-3-ium hydrogen sulfate | 1328886-81-2

• 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: 1,3-bis(4-sulfobenzyl)-1H-imidazol-3-ium hydrogen sulfate
• CAS: 1328886-81-2
• 化学式: C₁₇H₁₇N₂O₆S₂*HO₄S
• 分子量: 506.535
• InChiKey: MTGGTYSAHGCMPY-UHFFFAOYSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  0.37
• 重原子数：
  32.0
• 可旋转键数：
  6.0
• 环数：
  3.0
• sp3杂化的碳原子比例：
  0.12
• 拓扑面积：
  194.98
• 氢给体数：
  3.0
• 氢受体数：
  8.0

反应信息

• 作为产物：
  描述：

  1,3-dibenzylimidazolium chloride 在 硫酸 作用下， 以77.4%的产率得到1,3-bis(4-sulfobenzyl)-1H-imidazol-3-ium hydrogen sulfate
  参考文献：
  名称：

  高效，可重复使用的磺酸基官能化布朗斯台德酸性离子液体催化剂的合成与应用

  摘要：

  合成了多种磺酸基官能化的布朗斯台德酸性离子液体（BAILs）催化剂。使用缩合和酯化反应评估了BAIL的催化活性。与H-ZSM-5，H-BETA，磺酸官能化的SBA-15催化剂相比，BAIL的催化活性高。通过紫外线可见光谱对BAILs进行的哈米特酸度顺序与其在酸催化反应中观察到的活性顺序是一致的。回收实验表明，这些新型BAILs可以重复使用而不会显着降低催化活性。新型BAIL具有许多吸引人的功能，例如低成本，高催化活性和可回收性。

  DOI：

  10.1016/j.catcom.2011.05.030

文献信息

• Synthesis and applications of novel imidazole and benzimidazole based sulfonic acid group functionalized Brönsted acidic ionic liquid catalysts
  作者：Rajkumar Kore、Rajendra Srivastava

  DOI：10.1016/j.molcata.2011.06.003

  日期：2011.7

  In this study, a variety of imidazole/benzimidazole based sulfonic acid group functionalized Bronsted acidic ionic liquids (BAILs) were synthesized. Catalytic activities of BAILS were assessed using multicomponent coupling reactions. Catalytic activities of BAILs were high when compared with those of solid acid catalysts such as H-ZSM-5. H-BETA, and sulfonic acid functionalized SBA-15 catalysts. The Hammett acidity order determined from UV-visible spectroscopy of BAILS is consistent with their activity order observed in acid-catalyzed reactions. Theoretical studies demonstrate that the hydrogen bonding plays a key role in tuning the acidity of BAILs. Recycling experiments suggest that these novel BAILS can be reused without significant loss in catalytic activity. Novel BAILS offer several attractive features such as low cost, high catalytic activity, and recyclability. (C) 2011 Elsevier B.V. All rights reserved.