Palladium(II) complexes with aminomethylphosphine ligands as catalysts for the heck reaction
Mustafa Kemal Yılmaz
New, aminomethyldiphosphine(P C N) ligands, ((C6 H5 ) 2 PCH2 ) 2 NR (R = C6 H3(CH3 )(OH) (1a), C6 H4 OC6 H5 (1b), C6 H4 SC6 H5 )(1c)) and their Pd(II) complexes have been syn-thesized and characterized. These complexes werefound to be efficient catalysts in the Heck reaction ofactivated and deactivated aryl halide with a varietyof olefins.
New perfluorinated rhodium-BINAP catalysts and hydrogenation of styrene in supercritical CO2
Yılmaz Mustafa Kemal
New perfluorinated BINAP ligands and their cationic rhodium complexes have been synthesized and characterized. The catalysts have been tested in homogeneous hydrogenation of the styrene in both methanol and supercritical carbon dioxide (scCO2). The selective hydrogenations of the styrene in scCO2 were carried out under the same reaction conditions of 343.15 K temperature and 120 bar CO2 pressure after 3 h (molar ratio of substrate to catalyst = 500). While all catalysts showed 100% conversion in methanol, same activity was not carried out in scCO2. (R)-6,6 -diperflorooktil-2,2 -bis(diphenylphosphino)-1,1 -binaphtyl- [Rh(COD)]BArF was showed the highest conversion (96.4%) in scCO2. Furthermore, methanol was used as co-solvent in the supercritical media in hydrogenation of styrene fo...