2-[1-(2,4,6-trimethylphenylimino)ethyl]-6-(3,5-dimethylpyrazol-1-yl)pyridine cobaltdichloride | 1449292-83-4

• 英文名称: 2-[1-(2,4,6-trimethylphenylimino)ethyl]-6-(3,5-dimethylpyrazol-1-yl)pyridine cobaltdichloride
• CAS: 1449292-83-4
• 化学式: C₂₁H₂₄Cl₂CoN₄
• 分子量: 462.348
• InChiKey: ZODHTPVNGPEWIT-POWSUHOESA-L

计算性质

• 辛醇/水分配系数(LogP)：
  None
• 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：

  3,5-二甲基吡唑 在 potassium tert-butylate 、 sodium 、 溶剂黄146 作用下， 以 四氢呋喃 、 1,4-二氧六环 、 甲醇 、 乙醇 、 乙酸乙酯 为溶剂， 反应 33.0h， 生成 2-[1-(2,4,6-trimethylphenylimino)ethyl]-6-(3,5-dimethylpyrazol-1-yl)pyridine cobaltdichloride
  参考文献：
  名称：

  Polymerization of 1,3-butadiene catalyzed by pincer cobalt(II) complexes derived from 2-(1-arylimino)-6-(pyrazol-1-yl)pyridine ligands

  摘要：

  A new class of air stable and structurally well-defined cobalt complexes with unsymmetrical pincer type ligands ([2-(ArN=CMe)-6-(PY)C5H3N]CoCl2) (Ar = -C6H5, PY = pyrazol-1-yl, 5a; Ar = 2,4,6-Me3C6H2 Py=pyrazol-1-yl, 5b; Ar = 2,6-(Pr2C6H3)-Pr-1. Py = pyrazol-1-yl, 5c; Ar = -C6H5, Py = 3,5-Me(2)pyrazol-1-yl, 5d; Ar=2,4,6-Me3C6H2, Py 3,5-Me(2)pyrazol-1-yl, 5e; Ar = 2,6-(Pr2C6H3)-Pr-i, Py = 3,5-Me(2)pyrazol-1-yl, 5f; Ar = 2,6-(Pr2C6H3)-Pr-i, Py 3,5-(i)Pr(2)pyrazol-1-yl, 5g and [2-(O=CMe)-6-(3,5-diphenylpyrazol-1-y1)C3H3N]CoCl2 5h) were prepared and the molecular structures of 5a, 5c and 5f were determined by single crystal X-ray crystallography. Upon activation by methylaluminoxane (MAO) in toluene at room temperature, all complexes initiate polymerization of 1,3-butadiene (polymer yields: 65-99%), affording polybutadiene with excellent cis-1,4 regularity (97.5-98.7%). The polymer yields and properties in terms of molecular weight and distribution are well controlled by the substituents on iminoaryl rings and pyrazole rings. Selectivity switch from cis-1,4 to syndio-1,2 was also achievable by adding phosphine as microstructure regulator. (C) 2013 Elsevier B.V. All rights reserved.

  DOI：

  10.1016/j.apcata.2013.04.026