The Multiple Roles of Imidazolium Ionic Liquids in Transition-Metal Catalysis: The Palladium-Catalyzed Telomerization of 1,3-Butadiene with Acetic Acid
作者:João M. Balbino、Daniel Peral、J. Carles Bayón、Jairton Dupont
DOI:10.1002/cctc.201402943
日期:2015.3
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,
乙酸钯(II)与一系列膦在3-(2-甲氧基乙基)-1-甲基咪唑鎓乙酸盐中催化的1,3-丁二烯与乙酸的端聚反应用于研究离子液体的作用。离子液体在此反应中起多种作用,因为它充当溶剂,稳定剂,配体和助催化剂。在三氟甲基化磺化三芳基膦Dan2phos存在下进行的反应在100°C下进行24小时,在15%的1,3-丁二烯转化率和75%的乙酸完全转化率下,转化率为14600,对端粒的选择性为89%。