Al2Me4(N,N'-3,5-bis(α,α-dimethylbenzyl)-2-hydroxysalicylidene-3-(aminomethyl)benzylamine(1-)) | 1361946-37-3

• 英文名称: Al2Me4(N,N'-3,5-bis(α,α-dimethylbenzyl)-2-hydroxysalicylidene-3-(aminomethyl)benzylamine(1-))
• CAS: 1361946-37-3
• 化学式: C₆₂H₇₀Al₂N₂O₂
• 分子量: 929.213
• InChiKey: NTONXVWVLFQDRJ-WPCWEOKNSA-L

计算性质

• 辛醇/水分配系数(LogP)：
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反应信息

• 作为产物：
  描述：

  N,N'-3,5-bis(α,α-dimethylbenzyl)-2-hydroxysalicylidene-3-(aminomethyl)benzylamine 、 三甲基铝 以 甲苯 为溶剂， 以93%的产率得到Al2Me4(N,N'-3,5-bis(α,α-dimethylbenzyl)-2-hydroxysalicylidene-3-(aminomethyl)benzylamine(1-))
  参考文献：
  名称：

  Preparation and Characterization of Aluminum Alkoxides Coordinated on salen-Type Ligands: Highly Stereoselective Ring-Opening Polymerization of rac-Lactide

  摘要：

  A series of salen-type ligands ((LH2)-H-1-(LH2)-H-6) with sterically bulky cumyl groups have been synthesized. Reaction of these ligands with AlMe3 yields the mononuclear aluminum complexes [LAlMe] (1-3) or dinuclear species [L2Al2Me4] (4-6), respectively. Further reaction of [LAlMe] (1-3) with benzyl alcohol produces [LAl(OBn)] (1a-3a), respectively. Solid-state structural studies reveal that complexes la and 2a are mononuclear; however, complex 6 is a d.inuclear species. Aluminum alkoxides 1a-3a are highly stereoselective in the ROP of rac-lactide, producing polylactide (PLA) with 94-97% enantiomeric selectivity (P-m) at high conversion. Their high enantioselectivity leads to PLA with high T-m (205 degrees C). The polymerization of L-lactide by these complexes also shows good living features with narrow PDI values (M-w/M-n = 1.06-1.25) signaling less or no transesterification, which can be further verified by MALDI-TOF mass spectrometric analysis.

  DOI：

  10.1021/om201281w