[(2-(C(H)=N(2,6-(i-Pr)2C6H3))-4,6-(t-Bu)2-phenoxide)AlMe2] | 353493-61-5

• 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: [(2-(C(H)=N(2,6-(i-Pr)2C6H3))-4,6-(t-Bu)2-phenoxide)AlMe2]
• 英文别名: aluminum;carbanide;2,4-ditert-butyl-6-[[2,6-di(propan-2-yl)phenyl]iminomethyl]phenolate
• CAS: 353493-61-5
• 化学式: C₂₉H₄₄AlNO
• 分子量: 449.656
• InChiKey: VYNRMRUBVIKNJS-UHFFFAOYSA-M

计算性质

• 辛醇/水分配系数(LogP)：
  7.87
• 重原子数：
  32
• 可旋转键数：
  5
• 环数：
  2.0
• sp3杂化的碳原子比例：
  0.48
• 拓扑面积：
  35.4
• 氢给体数：
  0
• 氢受体数：
  4

反应信息

• 作为反应物：
  描述：

  四氢呋喃 、 [(2-(C(H)=N(2,6-(i-Pr)2C6H3))-4,6-(t-Bu)2-phenoxide)AlMe2] 、 三(五氟苯基)硼烷 以 甲苯 为溶剂， 生成
  参考文献：
  名称：

  Cameron, Paul A.; Gibson, Vernon C.; Redshaw, Carl, Journal of the Chemical Society. Dalton Transactions (2001), 2001, # 9, p. 1472 - 1476

  摘要：

  DOI：
• 作为产物：
  描述：

  2,4-di-tert-butyl-6-(2,6-diisopropylphenyliminomethyl)phenol 在 NaH 作用下， 以 四氢呋喃 、 甲苯 为溶剂， 生成 [(2-(C(H)=N(2,6-(i-Pr)2C6H3))-4,6-(t-Bu)2-phenoxide)AlMe2]
  参考文献：
  名称：

  Copper(II) Ethylene Polymerization Catalysts: Do They Really Exist?

  摘要：

  The reactions of two types of copper(II) ethylene polymerization catalysts, [(sal)CuCl](2) (sal = 2-{C(H)=N(2,6-Pr-i(2)-C6H3)}-4,6-Bu-t(2)-phenoxide) and (alpha-diimine)CuCl2 (alpha-diimine = [(2,6-Pr-i(2)-C6H3)-N=C(Me)](2)). with methylaluminoxane (MAO) and trimethylaluminum (TMA) have been investigated. In both examples, facile and irreversible ligand (L) transfer from copper to TMA present in MAO was observed, resulting in formation of the corresponding (sal)AlMe2 and (imino-amido)AlMe2 complexes. The (imino-amido)AlMe2 complex is formed by alpha-diimine ligand transfer to aluminum followed by alkylation of one imino moiety in the ligand backbone. Both aluminum complexes were active catalysts for ethylene polymerization with activities similar to their Cu(II) precursors. Simple addition of a neutral salicylaldimine or alpha-diimine ligand to MAO in the absence of any copper species resulted in the formation of the corresponding LAlMe2 complexes, which are again active for ethylene polymerization. These results indicate that ethylene polymerization does not occur by a migratory insertion mechanism at the copper center, but is the result of ligand transfer to aluminum, and it is the resulting LAlMe2/LAlMe+-complexes that are likely the active species.

  DOI：

  10.1021/om800625f

文献信息

• Dimethylaluminium aldiminophenolates: synthesis, characterization and ring-opening polymerization behavior towards lactides
  作者：Wenjuan Zhang、Youhong Wang、Wen-Hua Sun、Lin Wang、Carl Redshaw

  DOI：10.1039/c2dt31215h

  日期：——

  The stoichiometric reaction of the salicylaldimine derivatives (L1–L12) with trimethylaluminium afforded the corresponding dimethylaluminium aldiminophenolates (C1–C12), which were fully characterized by NMR spectroscopy and elemental analysis. The molecular structures of the representative complexes C1, C6, and C8 were determined by the single-crystal X-ray diffraction, which revealed distorted tetrahedral geometry at aluminium. Activation of the dimethylaluminium aldiminophenolates for the ring-opening polymerization required one equivalent of BnOH. On the basis of the polymerization results for L-lactide, D-lactide or rac-lactide, higher efficiency was observed for the ROP of D-lactide, and the nature of the ligands present significantly affected the observed catalytic activities and the properties of the resultant polylactides.

  水杨醛亚胺衍生物（L1–L12）与三甲基铝的化学计量反应生成相应的二甲基铝醛亚宝系（C1–C12），这些化合物通过核磁共振光谱和元素分析进行了充分表征。代表性络合物C1、C6和C8的分子结构通过单晶X射线衍射确定，显示出铝呈扭曲的四面体几何结构。激活二甲基铝醛亚宝系用于开环聚合需要一个当量的BnOH。根据L-乳酸、D-乳酸或外消旋乳酸的聚合结果，D-乳酸的开环聚合效率较高，并且配体的性质显著影响了观察到的催化活性以及所得到的聚乳酸的性质。