Ethyl‐Zinc(II)‐Cation Equivalents: Synthesis and Hydroamination Catalysis |
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| Authors: | T O Petersen E Tausch Dr J Schaefer Dr H Scherer ProfDr P W Roesky ProfDr I Krossing |
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| Institution: | 1. Institut für Anorganische und Analytische Chemie and Freiburger Materialforschungszentrum (FMF), Albert‐Ludwigs‐Universit?t Freiburg, Albertstr. 21, 79104 Freiburg (Germany);2. Karlsruher Institut für Technologie (KIT), Institut für Anorganische Chemie, Engesserstr. 15, Geb. 30.45, 76131 Karlsruhe (Germany) |
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| Abstract: | Ion‐like ethylzinc(II) compounds with weakly coordinating aluminates Al(ORF)4]? and (RFO)3Al‐F‐Al(ORF)3]? (RF=C(CF3)3) were synthesized in a one‐pot reaction and fully characterized by single‐crystal X‐ray diffraction, NMR and vibrational spectroscopy, and by quantum chemical calculations. The catalytic activity of ion‐like Et‐ZnAl(ORF)4] in intermolecular hydroamination and in the unusual double hydroamination of anilines and alkynes was investigated. Favorable performance was also found in comparison to the Et2Zn/ PhNMe2H]+B(C6F5)4]? system generated in situ at lower catalyst loadings of 2.5 mol %. |
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| Keywords: | alkynes aluminum hydroamination reactive cations weakly coordinating anions zinc |
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