title: Modification of aluminium alkoxides with dialkylmalonates.
abstract: Depending on the reaction conditions, different aluminium dialkylmalonate derivatives were obtained by reaction of aluminium alkoxides Al(OR)3(R = Et,iPr,tBu) with dialkylmalonates, viz. Al(malonate)3(malonate = dimethyl, diethyl, di-iso-propyl and di-tert-butyl malonate), Al2(OiPr)4(malonate)2(malonate = di-iso-propyl and di-tert-butyl malonate), Al2(OiPr)2(di-iso-propylmalonate)4and Al3(OH)(OEt)3(diethylmalonate)5. All compounds were characterized by NMR spectroscopy, and single crystal structure analyses are reported for each type of compound. An Al2(OiPr)2(dialkylmalonate)4derivative was only obtained by disproportionation of Al2(OiPr)4(di-iso-propylmalonate)2, but not by reaction of Al(OiPr)3with dialkylmalonates in the corresponding molar ratio. Reactions of Al(OtBu)3only resulted in Al(malonate)3derivatives, but no transesterification was observed, contrary to the reaction of Al(OiPr)3with dimethyl or diethyl malonate.
authors.affiliation: Institute of Materials Chemistry, Vienna University of Technology, Vienna, Austria.
authors.forename: Robert
authors.initials: R
authors.lastname: Lichtenberger
authors.affiliation: Institute of Materials Chemistry, Vienna University of Technology, Vienna, Austria.
authors.forename: Stefan O
authors.initials: SO
authors.lastname: Baumann
authors.affiliation: Institute of Materials Chemistry, Vienna University of Technology, Vienna, Austria.
authors.forename: Maria
authors.initials: M
authors.lastname: Bendova
authors.affiliation: Institute of Materials Chemistry, Vienna University of Technology, Vienna, Austria.
authors.forename: Michael
authors.initials: M
authors.lastname: Puchberger
authors.affiliation: Institute of Materials Chemistry, Vienna University of Technology, Vienna, Austria.
authors.forename: Ulrich
authors.initials: U
authors.lastname: Schubert
keywords: 27Al NMR spectroscopy; Aluminium alkoxides; Dialkylmalonates