Synthesis and Characterization of β-Diketiminate Aluminum Compounds and Their Use in the Ring-Opening Polymerization of ε-Caprolactone

Xiaoli Ma; Miaomiao Yao; Mingdong Zhong; Ziyan Deng; Wenling Li; Zhi Yang; Herbert W. Roesky

doi:10.1002/zaac.201600396

Synthesis and Characterization of β-Diketiminate Aluminum Compounds and Their Use in the Ring-Opening Polymerization of ε-Caprolactone

Xiaoli Ma^*, Miaomiao Yao, Mingdong Zhong, Ziyan Deng, Wenling Li, Zhi Yang, Herbert W. Roesky

^*Corresponding author for this work

School of Chemistry and Chemical Engineering

Research output: Contribution to journal › Article › peer-review

9 Citations (Scopus)

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.

Original language	English
Pages (from-to)	198-202
Number of pages	5
Journal	Zeitschrift fur Anorganische und Allgemeine Chemie
Volume	643
Issue number	2
DOIs	https://doi.org/10.1002/zaac.201600396
Publication status	Published - 1 Jan 2017

Keywords

Alkylaluminum compounds
Ring-opening polymerization
β-Diketiminates
ε-Caprolactone

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title = "Synthesis and Characterization of β-Diketiminate Aluminum Compounds and Their Use in the Ring-Opening Polymerization of ε-Caprolactone",

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.",

keywords = "Alkylaluminum compounds, Ring-opening polymerization, β-Diketiminates, ε-Caprolactone",

author = "Xiaoli Ma and Miaomiao Yao and Mingdong Zhong and Ziyan Deng and Wenling Li and Zhi Yang and Roesky, {Herbert W.}",

note = "Publisher Copyright: {\textcopyright} 2017 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim",

year = "2017",

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doi = "10.1002/zaac.201600396",

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T1 - Synthesis and Characterization of β-Diketiminate Aluminum Compounds and Their Use in the Ring-Opening Polymerization of ε-Caprolactone

AU - Ma, Xiaoli

AU - Yao, Miaomiao

AU - Zhong, Mingdong

AU - Deng, Ziyan

AU - Li, Wenling

AU - Yang, Zhi

AU - Roesky, Herbert W.

PY - 2017/1/1

Y1 - 2017/1/1

N2 - 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.

AB - 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.

KW - Alkylaluminum compounds

KW - Ring-opening polymerization

KW - β-Diketiminates

KW - ε-Caprolactone

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Synthesis and Characterization of β-Diketiminate Aluminum Compounds and Their Use in the Ring-Opening Polymerization of ε-Caprolactone

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