[Zn3(Et)2(maltolato)4] | 1384117-94-5

• 英文名称: [Zn3(Et)2(maltolato)4]
• 英文别名: [Zn3(Et)2(MalO)4]
• CAS: 1384117-94-5
• 化学式: C₂₈H₃₀O₁₂Zn₃
• 分子量: 754.709
• InChiKey: GWISNAUQSKWIQZ-UHFFFAOYSA-J

计算性质

• 辛醇/水分配系数(LogP)：
  None
• 重原子数：
  None
• 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：
  None
• 氢给体数：
  None
• 氢受体数：
  None

反应信息

• 作为反应物：
  描述：

  [Zn3(Et)2(maltolato)4] 以 xylene 为溶剂， 生成 bis(3-hydroxy-2-methyl-4-pyronato)zinc(II) 、 [Zn(Et)(maltolato)]
  参考文献：
  名称：

  Zinc Complexes Supported by Maltolato Ligands: Synthesis, Structure, Solution Behavior, and Application in Ring-Opening Polymerization of Lactides

  摘要：

  A series of novel zinc alkoxides supported by chelating maltolato (MalO; MalOH = maltol) ligands were successfully synthesized and characterized. Reaction of MalOH with ZnEt2 (3:4) gives a trinuclear cluster [Zn-3(Et)(2)(MalO)(4)] (1), which spontaneously disproportionates in solution to mononuclear species [Zn(MalO)(2)] (1a) and [Zn(Et)(MalO)] (1b); (1a) and (1b) form [Zn(MalO)(2)(py)] (2), [Zn(Et)(MalO)(py)] (3), [Zn(MalO)(2)](2) ((1a)(2)), [Zn(MalO)(OBn)](2) ((1c)(2)), and [Zn-4(Et)(2)(OEt)(2)(MalO)(4)] (4) on addition of pyridine, benzyl alcohol (BnOH), or dry O-2, respectively. Compounds 1, 2, (1a)(2), and 4 were characterized by elemental analysis, NMR. ESI-MS, and single-crystal X-ray structural analysis. Variable-temperature NMR experiments showed that (1a)(2) and (1c)(2) are in equilibrium with the monomeric form in solution. The addition of L-Iactide (L-LA) to a combination of 1 and 2 equiv of BnOH in dichloromethane at room temperature in different molar ratios leads to rapid and efficient generation of poly(L-LA) with end-capped BnO groups. According to kinetic studies, propagation by [Zn(OBn)(MalO)] (1c) is first-order with respect to both the monomer and 1c concentrations; 1a in ring-opening polymerization of L-LA shows no activity. These results suggest a single-site active species in the ring-opening polymerization of L-LA.

  DOI：

  10.1021/om300321h
• 作为产物：
  描述：

  麦芽醇 、 diethylzinc 以 甲苯 为溶剂， 以75%的产率得到[Zn3(Et)2(maltolato)4]
  参考文献：
  名称：

  Zinc Complexes Supported by Maltolato Ligands: Synthesis, Structure, Solution Behavior, and Application in Ring-Opening Polymerization of Lactides

  摘要：

  A series of novel zinc alkoxides supported by chelating maltolato (MalO; MalOH = maltol) ligands were successfully synthesized and characterized. Reaction of MalOH with ZnEt2 (3:4) gives a trinuclear cluster [Zn-3(Et)(2)(MalO)(4)] (1), which spontaneously disproportionates in solution to mononuclear species [Zn(MalO)(2)] (1a) and [Zn(Et)(MalO)] (1b); (1a) and (1b) form [Zn(MalO)(2)(py)] (2), [Zn(Et)(MalO)(py)] (3), [Zn(MalO)(2)](2) ((1a)(2)), [Zn(MalO)(OBn)](2) ((1c)(2)), and [Zn-4(Et)(2)(OEt)(2)(MalO)(4)] (4) on addition of pyridine, benzyl alcohol (BnOH), or dry O-2, respectively. Compounds 1, 2, (1a)(2), and 4 were characterized by elemental analysis, NMR. ESI-MS, and single-crystal X-ray structural analysis. Variable-temperature NMR experiments showed that (1a)(2) and (1c)(2) are in equilibrium with the monomeric form in solution. The addition of L-Iactide (L-LA) to a combination of 1 and 2 equiv of BnOH in dichloromethane at room temperature in different molar ratios leads to rapid and efficient generation of poly(L-LA) with end-capped BnO groups. According to kinetic studies, propagation by [Zn(OBn)(MalO)] (1c) is first-order with respect to both the monomer and 1c concentrations; 1a in ring-opening polymerization of L-LA shows no activity. These results suggest a single-site active species in the ring-opening polymerization of L-LA.

  DOI：

  10.1021/om300321h