Publications de Cinzia Chiappe

Styrene oxidation by hydrogen peroxide in ionic liquids: the role of the solvent on the competition between two Pd-catalyzed processes, oxidation and dimerization

A series of hydrophilic N,N-dimethylpyrrolidinium-and N,N-dimethylpiperidinium-based ionic liquids (ILs) have been prepared and applied as reaction media in the Wacker oxidation of styrene by hydrogen peroxide using PdCl2 as the catalyst. The efficiency of ...

2011

Nitrile-functionalized pyrrolidinium ionic liquids as solvents for cross-coupling reactions involving in situ generated nanoparticle catalyst reservoirs

Paul Joseph Dyson, Rosario Scopelliti, Zhaofu Fei, Ilaria Biondi, Christian Hartinger, Yuehui Li, Xuemei Yang, Yugang Cui, Manish Chaubey, Cinzia Chiappe

Nitrile-functionalized pyrrolidinium-based ionic liqs. were prepd. and characterized by spectroscopic methods and x-ray crystallog. The application of these new ionic liqs. as reaction media for Suzuki and Stille C-C cross-coupling reactions was studied an ...

Royal Society of Chemistry2010

Development of nitrile-functionalized ionic liquids for C-C coupling reactions: implication of carbene and nanoparticle catalysts

Paul Joseph Dyson, Rosario Scopelliti, Zhaofu Fei, Wee Han Ang, Dongbin Zhao, Cinzia Chiappe

A series of nitrile-functionalized imidazolium salts (many of which are liquid at room temperature) have been prepared. The reactivity of these salts with PdCl2 has been studied, resulting in salts containing a tetrachloropalladate dianion or co ...

2007

Influence of the Interaction between Hydrogen Sulfide and Ionic Liquids on Solubility: Experimental and Theoretical Investigation

Paul Joseph Dyson, Gabor Laurenczy, Ana Vidis, Cinzia Chiappe

The soly. of H2S in a series of 1-butyl-3-methylimidazolium ([bmim]+) based ionic liqs. (ILs) with different anions, chloride, tetrafluoroborate ([BF4]-), hexafluorophosphate ([PF6]-), triflate ([TfO]-), and bis(trifluoromethyl)sulfonylimide ([Tf2N]-), and ...

2007

Remarkable Anion and Cation Effects on Stille Reactions in Functionalised Ionic Liquids

Paul Joseph Dyson, Zhaofu Fei, Dongbin Zhao, Cinzia Chiappe

Task-specific ionic liquids bearing nitrile functional groups attached to the cation and nitrogen-donor-containing anions strongly affect the efficiency of the Stille cross-coupling, influencing the nature of the catalyst and its stability. The relative st ...

Wiley2006