Κατεύθυνση Ομογενής ΚατάλυσηLibrary of the School of Science
Αθανάσιος Φιλιππόπουλος, Επίκουρος Καθηγητής, Tμήμα Χημείας, Ε. Κ. Π. Α.
Ελένη Ευθυμιάδου, Επίκουρη Καθηγήτρια, Τμήμα Χημείας, Ε. Κ. Π. Α.
Πατρίνα Παρασκευοπούλου, Επίκουρη Καθηγήτρια, Τμήμα Χημείας, Ε. Κ. Π. Α.
Σύνθεση και χαρακτηρισμός συμπλόκων ενώσεων Ru(II) με υποκαταστάτες παράγωγα της πυριδυλ-κινολίνης και εφαρμογή τους σε αντιδράσεις υδρογονώσεως με μεταφορά
Synthesis and charazterization of Ru(II) complexes with pyridyl-quinoline derivatives as ligands and their application in transfer hydrogenation reactions
In this Master Thesis, three new ruthenium (II) complexes incorporating different bidentate ligands were synthesized. The purpose of this study was to investigate their catalytic potential on transfer hydrogenation reactions of aromatic ketones.
The general formula of the new complexes was that of [RuCl(p-cymene)(L)]Cl, where p-cymene corresponds to 4-isopropyl-toluene (C10H14) and L = L1, L2, L3. The bidentate ligands, L1 = 2,2’-pyridyl-quinoline, L2 = (6-(4-yl-phenol)-2-(2-pyridine)-4-phenylquinoline), L3 = (6-bromo-4-phenyl-2-pyridin-2-ylquinoline), which were used were stable in aerobic conditions. L1 was prepared in moderate yields according to the protocol developed from our laboratory, while L2 and L3 were prepared according to the literature.
The new complexes were characterized by standard spectroscopic methods, including FT-IR, NMR (1H) and UV-Vis.
These new catalysts were further tested for their effectiveness on ketone transfer hydrogenation reactions, using 2-propanol as a source of hydrogen, on different substrates (benzophenone and acetophenone).
Catalytic tests gave great to exceptional results for the conversion of ketones into the corresponding aromatic alcohols.
An observation worth mentioning was the fact that the [RuCl(p-cymene)(L1)]Cl complex, was very soluble in water. This might play an important role in future research on biphasic aqueous catalysis.
Main subject category:
synthesis, Ru(II) complexes, transfer hydrogenation reactions, aromatic ketones, hydrogen transfer, 2,2’-pyridyl-quinoline