Aminotroponate zinc complexes as catalysts for the intramolecular hydroamination of alkenes and alkynes

Nils Meyer, Karolin Löhnwitz, Agustino, Peter W. Roesky, Maximilian Dochnahl, Siegfried Blechert

Research output: Contribution to journalArticlepeer-review

63 Citations (Scopus)

Abstract

The dimeric complexes 2-(isopropylamino)troponate zinc methyl and ethyl [(iPrAT)Zn-R]2 (R = Me (2a), Et (2b)) were synthesized by reaction of (iPrAT)H with dimethyl and diethyl zinc, respectively, in toluene at low temperature. Reacting (iPrAT)H with dimethyl zinc at elevated temperature resulted in the double-substituted complex [(iPrAT)2Zn] (3). Compounds 2a,b, which were investigated by single-crystal X-ray diffraction, are dimeric in the solid state. The metal centers are bridged asymmetrically by two (μ)-oxygen atoms; thus a flat Zn-O-Zn'-O' plane is observed. Compounds 2a,b were used as the catalyst in the intramolecular hydroamination reaction of nonactivated terminal aminoolefins and one aminoalkyne. Good catalytic activities at elevated temperature were observed.

Original languageEnglish
Pages (from-to)3730-3734
Number of pages5
JournalOrganometallics
Volume25
Issue number15
DOIs
Publication statusPublished - 17 Jul 2006

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