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铝配合物引发和区域选择性共聚环氧化物和酸酐的机理研究。

Mechanistic insight into initiation and regioselectivity in the copolymerization of epoxides and anhydrides by Al complexes.

机构信息

Department of Chemistry, Washington University in St. Louis, Campus Box 1134, 1 Brookings Drive, St. Louis, MO 63130, USA.

Department of Chemistry, University of Virginia, PO Box 400319, Charlottesville, VA 22904-4319, USA.

出版信息

Chem Commun (Camb). 2020 Nov 12;56(90):14027-14030. doi: 10.1039/d0cc05652a.

DOI:10.1039/d0cc05652a
PMID:33099587
Abstract

Pentacoordinate Al catalysts comprising bipyridine (bpy) and phenanthroline (phen) backbones were synthesized and their catalytic activity in epoxide/anhydride copolymerization was investigated and compared to (t-Busalph)AlCl. Stoichiometric reactions of tricyclic anhydrides with Al alkoxide complexes produced ring-opened products that were characterized by NMR spectroscopy, mass spectrometry, and X-ray crystallography, revealing key regio- and stereochemical aspects.

摘要

合成了包含联吡啶(bpy)和菲咯啉(phen)骨架的五配位 Al 催化剂,并研究了它们在环氧化物/酸酐共聚中的催化活性,并与(t-Busalph)AlCl 进行了比较。三环酸酐与 Al 烷氧基配合物的计量反应生成了开环产物,这些产物通过 NMR 光谱、质谱和 X 射线晶体学进行了表征,揭示了关键的区域和立体化学方面。

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