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Quaternary onium chlorometallates as hydrosilylation catalysts
Author(s) -
Lovel I,
Goldberg Yu,
Shymanska M,
Lukevics E
Publication year - 1987
Publication title -
applied organometallic chemistry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.53
H-Index - 71
eISSN - 1099-0739
pISSN - 0268-2605
DOI - 10.1002/aoc.590010412
Subject(s) - chemistry , hydrosilylation , catalysis , triethylsilane , medicinal chemistry , homogeneous catalysis , chloride , polymer chemistry , transition metal , phenylacetylene , metal , organic chemistry
Abstract Sixteen triethylbenzylammonium chlorometallates [Et 3 NCH 2 Ph] m + [MCI n ] m − (M= transition metal, m = 1–3, n = 3–6) and nine anchored ionic metal complexes [℗–CH 2 PBu 3 ] m + [MCI n ] m − derived from ‘polymer‐bound tributylmethylphosphonium chloride’ have been prepared. All the complexes were studied as catalysts in the hydrosilylation of phenylacetylene with triethylsilane. The homogeneous Rh III , Pt IV , Ir III , Cu II , Zn II , Fe III and anchored Pt IV , Rh III , Os IV complexes were found to be active in this reaction. The regio‐ and stereoselectivity of the following catalyst types is determined by the metal atom involved, being a weak function of the chemical environment; neutral chloride (MCl n–m ); acid (H 2 MCl 6 ); salt containing the lipophilic organic cation ([Et 3 NCH 2 Ph] m + [MCl n ] m − ); polymer‐supported metallate anion ([℗–CH 2 PBu 3 ] m +[MCl n ] m − ).