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The Multiple Roles of Imidazolium Ionic Liquids in Transition‐Metal Catalysis: The Palladium‐Catalyzed Telomerization of 1,3‐Butadiene with Acetic Acid
Author(s) -
Balbino João M.,
Peral Daniel,
Bayón J. Carles,
Dupont Jairton
Publication year - 2015
Publication title -
chemcatchem
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.497
H-Index - 106
eISSN - 1867-3899
pISSN - 1867-3880
DOI - 10.1002/cctc.201402943
Subject(s) - telomerization , ionic liquid , acetic acid , catalysis , palladium , chemistry , selectivity , solvent , organic chemistry , transition metal , ionic bonding , ligand (biochemistry) , polymer chemistry , inorganic chemistry , ion , biochemistry , receptor
The telomerization of 1,3‐butadiene with acetic acid catalyzed by palladium(II) acetate associated with a series of phosphines in 3‐(2‐methoxyethyl)‐1‐methylimidazolium acetate was used to investigate the role of the ionic liquid. The ionic liquid plays multiple roles in this reaction as it acts as the solvent, stabilizer, ligand, and cocatalyst. The reaction performed in the presence of Dan2phos, a trifluoromethylated sulfonated triarylphosphine, at 100 °C for 24 h gave a turnover number of 14 600 with 89 % selectivity to telomers at 75 % 1,3‐butadiene conversion and complete acetic acid conversion.