Activation of bismuth(III) derivatives in ionic liquids: novel and recyclable catalytic systems for Friedel-Crafts acylation of aromatic compounds.
The activity of four bismuth(III) derivatives when employed as Friedel-Crafts catalysts for the acylation of aromatics was found to increase dramatically when dissolved in ionic liquids. Solutions of bismuth oxide or triflate in [emim][NTf(2)] and [bmim][NTf(2)] are the most efficient catalytic systems, with catalyst loading as low as 1% leading to clean, high-yielding acylation of a variety of benzene derivatives. These improved Friedel-Crafts catalytic systems can also be efficiently recycled as opposed to traditional systems. [reaction: see text]
Gmouh
Said
S
Laboratoire SESO, UMR 6510, Institut de Chimie de Rennes, Université de Rennes 1, Bat10A, Campus de beaulieu, 35042 Rennes Cedex, France.
Yang
Hongli
H
Vaultier
Michel
M
Yang
Hongly
H