Synthesis and Characterization of β‐Diketiminate Aluminum Compounds and Their Use in the Ring‐Opening Polymerization of ε‐Caprolactone |
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| Authors: | Xiaoli Ma Miaomiao Yao Mingdong Zhong Ziyan Deng Wenling Li Zhi Yang Herbert W Roesky |
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| Institution: | 1. +86‐10‐68911032;2. School of Chemical Engineering and Environment, Beijing Institute of Technology, Beijing, P. R. China;3. +49‐551‐393‐373;4. Institut für Anorganische Chemie, Georg‐August‐Universit?t G?ttingen, G?ttingen, Germany |
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| Abstract: | Four aluminum alkyl compounds, CH{(CH3)CN‐2,4,6‐MeC6H2}2AlMe2] ( 1 ), CH{(CH3)CN‐2,4,6‐MeC6H2}2AlEt2] ( 2 ), CH{(CH3)CN‐2‐iPrC6H4}2AlMe2] ( 3 ), and CH{(CH3)CN‐2‐iPrC6H4}2AlEt2] ( 4 ), bearing β‐diketiminate ligands CH{(Me)CN‐2,4,6‐MeC6H2}]2 (L1H) and CH{(Me)CN‐2‐iPrC6H4}]2 (L2H) were obtained from the reactions of trimethylaluminum, triethylaluminum with the corresponding β‐diketiminate, respectively. All compounds were characterized by 1H NMR and 13C NMR spectroscopy, single‐crystal X‐ray structural analysis, and elemental analysis. Compounds 1 – 4 were found to catalyze the ring‐opening polymerization (ROP) of ε‐caprolactone (ε‐CL) with good activity. |
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| Keywords: | Alkylaluminum compounds β ‐Diketiminates ε ‐Caprolactone Ring‐opening polymerization |
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