[Zn3(benzoate)6(2,3-dimethylpyrazine)2] | 1101192-04-4

• 英文名称: [Zn3(benzoate)6(2,3-dimethylpyrazine)2]
• CAS: 1101192-04-4
• 化学式: C₅₄H₄₆N₄O₁₂Zn₃
• 分子量: 1139.15
• InChiKey: VTEKCKAMVIAZIM-UHFFFAOYSA-H

计算性质

• 辛醇/水分配系数(LogP)：
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• 重原子数：
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• 可旋转键数：
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• 环数：
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• sp3杂化的碳原子比例：
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• 拓扑面积：
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• 氢给体数：
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• 氢受体数：
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反应信息

• 作为产物：
  描述：

  2,3-二甲基吡嗪 、 zinc(II) nitrate hexahydrate 、 ammonium benzoate 以 水 、 丙酮 为溶剂， 以42.2%的产率得到[Zn3(benzoate)6(2,3-dimethylpyrazine)2]
  参考文献：
  名称：

  Substituent effects of pyrazine on construction of crystal structures of Zn(II)-benzoate complexes and their catalytic activities (dinuclear, trinuclear, and pentanuclear to 1-D and 2-D)

  摘要：

  Several substituted pyrazine ligands (2,3-dimethylpyrazine, 2,6-dimethylpyrazine, 2,5-dimethylpyrazine, quinoxaline) as well as simple pyrazine have been employed to investigate how the bridging pyrazine ligand influences on construction of Zn-benzoate complexes. Simple pyrazine and 2,5-dimethylpyrazine are used as bridging ligands to form two-dimensional and one-dimensional polymeric compounds, respectively. The other quinoxaline and two dimethyl-substituted pyrazine ligands are used only as terminal ligands to form dinuclear, trinuclear, and pentanuclear complexes. This result indicates that the substituents of pyrazine are very important roles for construction of Zn-benzoate complexes. Interestingly, the compounds 1-5 catalyzed efficiently the transesterification of a variety of esters, and among them, the pentanuclear complex 3 showed the most efficient reactivity. The substrates with the electron-withdrawing substituents have Undergone faster transesterification, while those with the electron-donating ones have shown slow reaction. In addition, p-nitrophenyl acetate and p-nitrophenyl benzoate, known to be problematic substrates for the transesterification reaction. were also converted quantitatively to the corresponding products. Selectivity test of primary over secondary alcohol protection in the presence of 3 has provided, exclusively, the primary acetate, propyl acetate, suggesting that this catalytic system can be potentially useful in selecting for primary alcohols. (C) 2008 Elsevier Ltd. All rights reserved.

  DOI：

  10.1016/j.poly.2008.08.010