| 369404-60-4

• CAS: 369404-60-4
• 化学式: C₅₆H₈₀N₄O₂Zn₂
• 分子量: 972.057
• InChiKey: QAAVQTFQHYMGMG-FAWMGFJISA-N

计算性质

• 辛醇/水分配系数(LogP)：
  None
• 重原子数：
  None
• 可旋转键数：
  None
• 环数：
  None
• sp3杂化的碳原子比例：
  None
• 拓扑面积：
  None
• 氢给体数：
  None
• 氢受体数：
  None

反应信息

• 作为产物：
  描述：

  甲醇 、 以 甲苯 为溶剂， 以59%的产率得到
  参考文献：
  名称：

  Single-Site β-Diiminate Zinc Catalysts for the Alternating Copolymerization of CO₂ and Epoxides:  Catalyst Synthesis and Unprecedented Polymerization Activity

  摘要：

  Synthetic routes to zinc ss -diiminate complexes are reported. The synthesis of 11 ss -diimine [(BDI)H] ligands, with varying N-aryl substituents and bridging structures, is described. These ligands are converted to (BDI)ZnX complexes (X = OAc. Et. N(SiMe3)(2), Br, Cl, OH, OMe, (OPr)-Pr-i). X-ray structural data revealed that all zinc complexes examined exist as mu -X-bridged dimers in the solid state, with the exception of the zinc ethyl and amido complexes which were monomeric. Complexes of the form (BDI)ZnOR (R = alkyl, acyl) and (BDI)ZnN(SiMe3)(2) are highly active catalysts for the alternating copolymerization of epoxides and CO2. Copolymerizations of cyclohexene oxide (CHO) and CO2 with (BDI-1)ZnX [(BDI-1) = 2-((2,6-diisopropylphenyl)amido)-4-((2,6-diisopropylphenyl)imino)-2-pentene)] and (BDI-2)ZnX [(BDI-2) = 2-((2,6-diethylphenyl)amido)-4-((2,6-diethylphenyl)imino)-2-pentene)], where X = OAc, Et, N(SiMe3)(2), Br, Cl, OH, OMe, (OPr)-Pr-i, were attempted at 50 degreesC and 100 Psi CO2. Complexes with X = OAc, N(SiMe3)(2), OMe, (OPr)-Pr-i all produced polycarbonate by the alternated insertion of CHO and CO2 with similar catalytic activities, comparable molecular weights, and narrow molecular weight distributions (MWD similar to 1.1), indicating the copolymerizations are living. Furthermore, ligand effects were shown to dramatically influence the polymerization activity as minor steric changes accelerated or terminated the polymerization activity.

  DOI：

  10.1021/ja003850n