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Cobalt(II) and (I) Complexes of Diphosphine‐Ketone Ligands: Catalytic Activity in Hydrosilylation Reactions
Author(s) -
Verhoeven Dide G. A.,
Kwakernaak Joost,
van Wiggen Maxime A. C.,
Lutz Martin,
Moret MarcEtienne
Publication year - 2019
Publication title -
european journal of inorganic chemistry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.667
H-Index - 136
eISSN - 1099-0682
pISSN - 1434-1948
DOI - 10.1002/ejic.201801221
Subject(s) - hydrosilylation , chemistry , catalysis , cobalt , phenylsilane , acetophenone , ligand (biochemistry) , ketone , polymer chemistry , solvent , metal , organic chemistry , biochemistry , receptor
The hydrosilylation of unsaturated compounds homogeneously catalyzed by cobalt complexes has gained considerable attention in the last years, aiming at substituting precious metal‐based catalysts. In this study, the catalytic activity of well‐characterized Co II and Co I complexes of the p Tol dpbp ligand is demonstrated in the hydrosilylation of 1‐octene with phenylsilane. The Co I complex is the better precatalyst for the mentioned reaction under mild conditions, at 1 mol‐% catalyst, 1 h, room temperature, and without solvent, yielding 84 % of octylphenylsilane. Investigation of the substrate scope shows lower performance of the catalyst in styrene hydrosilylation, but excellent results with allylbenzene (84 %) and acetophenone (> 99 %). This catalytic study contributes to the field of cobalt‐catalyzed hydrosilylation reactions and shows the first example of catalysis employing the dpbp ligand in combination with a base metal.