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Issue 44, 2009
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Synthesis and catalytic application of aluminium anilido-pyrazolate complexes

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Abstract

A series of aluminium complexes containing anilido-pyrazolate ligands is described. Reactions of four anilido-pyrazolate ligand precursors, HNPhPz, HNPhTriMePz, HNPhOMePz, or HNPhSMePz [HNPhPz = ortho-C6H4(NH-phenyl)(1-pyrazole); HNPhTriMePz = ortho-C6H4(NH-2,4,6-trimethylphenyl)(1-pyrazole); HNPhOMePz = ortho-C6H4(NH-2-methoxyphenyl)(1-pyrazole); HNPhSMePz = ortho-C6H4(NH-2-methylthiophenyl)(1-pyrazole)], with one molar equivalent of AlMe3 in toluene give the aluminium dimethyl complexes, (NArPz)AlMe2 [Ar = phenyl, (NPhPz)AlMe2 (1); Ar = 2,4,6-trimethylphenyl, (NPhTriMePz)AlMe2 (2); Ar = 2-methoxyphenyl, (NPhOMePz)AlMe2 (3); Ar = 2-methylthiophenyl, (NPhSMePz)AlMe2 (4)], respectively. The molecular structures are reported for compounds 1 and 3. Their catalytic activities toward the ring opening polymerisation reaction of ε-caprolactone in the presence of BnOH are also under investigation.

Graphical abstract: Synthesis and catalytic application of aluminium anilido-pyrazolate complexes

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Publication details

The article was received on 17 Mar 2009, accepted on 19 Sep 2009 and first published on 15 Oct 2009


Article type: Paper
DOI: 10.1039/B905394H
Citation: Dalton Trans., 2009, 9800-9806
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    Synthesis and catalytic application of aluminium anilido-pyrazolate complexes

    K. Peng and C. Chen, Dalton Trans., 2009, 9800
    DOI: 10.1039/B905394H

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