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Ethyl‐Zinc(II)‐Cation Equivalents: Synthesis and Hydroamination Catalysis
Author(s) -
Petersen T. O.,
Tausch E.,
Schaefer J.,
Scherer H.,
Roesky P. W.,
Krossing I.
Publication year - 2015
Publication title -
chemistry – a european journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.687
H-Index - 242
eISSN - 1521-3765
pISSN - 0947-6539
DOI - 10.1002/chem.201502328
Subject(s) - hydroamination , catalysis , chemistry , intermolecular force , zinc , medicinal chemistry , single crystal , crystal structure , ion , infrared spectroscopy , inorganic chemistry , crystallography , organic chemistry , molecule
Ion‐like ethylzinc(II) compounds with weakly coordinating aluminates [Al(OR F ) 4 ] − and [(R F O) 3 Al‐F‐Al(OR F ) 3 ] − (R F =C(CF 3 ) 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‐Zn[Al(OR F ) 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 Et 2 Zn/ [PhNMe 2 H] + [B(C 6 F 5 ) 4 ] − system generated in situ at lower catalyst loadings of 2.5 mol %.
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