Yazar "Aydin, A. E." seçeneğine göre listele

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    Anticorrosive properties with catalytic behaviour of primer PANI film and top PPy coating synthesised in presence of novel norephedrine based amino alcohol compound
    (Taylor & Francis Ltd, 2014) Ozyilmaz, A. T.; Aydin, A. E.; Akdag, A.
    Polyaniline film as primer coating was deposited on stainless steel ( SS) in aniline containing aqueous oxalic acid solution, and subsequent synthesis of top PPy film with 2-((5-ethylthiophen-2yl) methylamino)-1-phenylpropan-1-ol (AAN) compound of different concentrations was achieved in acetonitrile-LiClO4 successfully. The corrosion performances of coated and uncoated electrodes in 3.5%NaCl solution were evaluated with the help of AC impedance spectroscopy, anodic polarisation plots and open circuit potential time curves. The protective effect of bilayer coatings with AAN compound on SS electrode grew in parallel with extended exposure time. The regular increase in the charge transfer resistance of SS/PANI/PPy-AAN17 electrode was attributed to allowing the limited ion diffusion of top PPy coating with AAN17 compound. The high 21764 Omega s(-1/ 2) value of the Warburg coefficient showed that PPy-AAN17 film on the SS/PANI coating led to the formation of protective oxide layers due to the catalytic behaviour of PANI film.
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    Enantioselective Addition of Diethylzinc to Aromatic Aldehydes Using Chiral Oxazoline-Based Ligands
    (Maik Nauka/Interperiodica/Springer, 2020) Aydin, A. E.
    Chiral oxazoline ligands containing an aromatic ring were prepared from norephedrine and pyrrole-2-carbonitrile or 2-hydroxybenzoyl chloride. The synthesized ligands were used in the copper-catalyzed asymmetric addition of diethylzinc to aromatic aldehydes to provide optically active 1-arylpropan-1-ols with high conversion (92%) and enantioselectivity (up to 99%ee).
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    Enantioselective Addition of Diethylzinc to Aromatic Aldehydes Using Novel Thiophene-Based Chiral Ligands
    (Maik Nauka/Interperiodica/Springer, 2020) Aydin, A. E.
    Chiral norephedrine-derived beta-amino alcohols with a thiophene moiety were synthesized from thiophene carbaldehydes (methyl- or ethyl-substituted) and chiral amino alcohols, such as both enantiomers of norephedrine and 2-aminopropanol. The synthesized ligands were applied to the catalytic asymmetric addition of diethylzinc to aldehydes to obtain optically active alcohols with a high conversion (92%) and excellent enantioselectivities (eeup to 99%). The highest enantioselectivity (ee99%) was obtained withp-trifluorobenzaldehyde as the substrate containing the strongly electron-acceptor CF(3)group.
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    Enantioselective Aldol Reaction between Isatins and Ketones, Catalyzed by Chiral Norephedrine-Derived ?-Amino Alcohols with a Thiophene Moiety
    (Maik Nauka/Interperiodica/Springer, 2022) Aydin, A. E.
    Chiral norephedrine-based beta-amino alcohol bearing a substituted thiophene ring were applied as catalysts for the enantioselective aldol reaction of isatins with ketones. Using enantiomeric chiral amino alco-hols, the desired aldol products were obtained in high yields and excellent enantioselectivities (up to 95% ee) under optimized conditions.