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Browsing by Author "Karakaya, Idris"

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    Efficient Transfer Hydrogenation Reactions With Quinazoline-Based Ruthenium Complexes
    (Pergamon-elsevier Science Ltd, 2015) Karabuga, Semistan; Bars, Songul; Karakaya, Idris; Gumus, Selcuk
    (4-Phenylquinazolin-2-yl)methanamine was synthesized in high yield by starting from naturally and commercially available glycine in a few steps. The ligand was reacted with RuCl2(PPh3)(3) and RuCl2(PPh3) dppb to obtain N-heterocyclic ruthenium(II) complexes. We have examined these catalysts in transfer hydrogenation of acetophenone derivatives and excellent conversions of up to 99% and high TOF values of up to 118,800 h(-1) using 0.1 mol % of catalyst were achieved. (C) 2014 Elsevier Ltd. All rights reserved.
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    Article
    Hydroxyl Group Effect in Novel Nnn Type Pyridine Based Ruthenium (Ii) Complex for the Transfer Hydrogenation of Ketones
    (Elsevier, 2016) Sahin, Irfan; Emir, Sedat; Ispir, Esin; Karakaya, Idris; Gumus, Selcuk; Ulusoy, Mahmut; Karabuga, Semistan
    The new NNN type pyridine ligands were prepared by using low cost and readily available starting materials and metalated with RuCl2(PPh3)(3) to obtain ruthenium(II) complexes. All structures were illuminated by NMR, HRMS, and FT-IR spectroscopy. The complexes exhibited good catalytic activity in transfer hydrogen reaction of ketones and it was found that a hydroxyl group on beta-position of the pyridine ring had a dramatic effect on the catalyst efficiency. (C) 2016 Elsevier B.V. All rights reserved.