| 1547237-33-1

• 分子结构分类: 有机化合物 - 苯类化合物 - 苯和取代衍生物
• CAS: 1547237-33-1
• 化学式: C₄₂H₄₇MgN₂OP
• 分子量: 651.127
• InChiKey: JJAHMKFVZYLWDC-ZAVDLOLZSA-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：
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• 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：

  2,6-dimethyl-N-(1-phenylethylidene)benzenamine 在 正丁基锂 作用下， 以 四氢呋喃 、 正己烷 为溶剂， 反应 52.0h， 生成
  参考文献：
  名称：

  Phosphinimino-amino Magnesium Complexes: Synthesis and Catalysis of Heteroselective ROP of rac-Lactide

  摘要：

  Alkane elimination reactions of phosphinimino-amine ligands HL1-8 ((2,6-Me-2-C6H3NH)C(Ph)=CHPPh2(NAr) (Ar = C6H5 (HL1); 2,6-Me-2-C6H3 (HL2); 2,6-Et-2-C6H3 (HL3); 2,6-Pr-i(2)-C6H3 (HL4); 2-OMe-C6H4 (HL5); 2-Cl-C6H4 (HL6); 3-CF3-C6H4 (HL7); 4-MeO-C6H4 (HL8)) with (MgBu2)-Bu-n, respectively, afforded a series of phosphinimino-amine-based complexes (L1-8MgBu)-Bu-n(THF) (1-8) by releasing butane. Complexes 1-8 are phosphinimino-amine-ligated THF-solvated mono(alkyl)s, among which 1-4 adopt twisted tetrahedral geometries, whereas 5 contains a trigonal bipyramido geometry core. Complexes 1-8 all display high activity for the ring-opening polymerization of rac-lactide. The molecular weights of the resulting PLA are close to the theoretic values, and the molecular weight distributions are narrow. Moreover, these complexes show medium to high heteroselectivity, which, interestingly, increases with the decrease of the ligand steric hindrance; thus, complex 1, bearing a less bulky ligand, exhibits a heteroselectivity of P-r = 0.98, the highest value of a magnesium-based initiator achieved to date. The kinetics study showed that the polymerization rate is first-order dependent on both monomer and initiator concentrations, and the overall rate equation is -d[LA]/dt = 3.78 M-1 s(-1) [LA][Mg].

  DOI：

  10.1021/om401056s