Please use this identifier to cite or link to this item: https://hdl.handle.net/20.500.13087/1875
Title: X-ray structure of palladium (II) complex and its catalytic activity on Suzuki-Miyaura reaction under mild conditions
Authors: Ünver, Hakan
Keywords: Suzuki-Miyaura
Palladium
C-C coupling
Hydrazide
Triphenylphosphine
Issue Date: 2018
Publisher: Springer
Abstract: Palladium (II) complex with 4-tert-butylbenzoic hydrazide (TBBH)/triphenylphosphine (PPh3) ligands was successfully synthesized and characterized by X-ray, H-1-NMR, C-13-NMR, P-31-NMR, FT-IR, UV-Vis, elemental analysis and magnetic measurements. Palladium (II) complex possesses distorted square planar geometry bearing neutral ligands at trans positions and two chloride anions as counter ions. The homogenous catalytic activity of synthesized complex was investigated on Suzuki-Miyaura reaction between phenyboronic acid and selected aryl halides. The effect of solvent, temperature, base, reaction time and substrate type were investigated. From the results, water mixed solvents including methanol, ethanol, dimethyl formamide and dimethyl sulfoxide found to be the most suitable solvents rather than the pure ones. Potassium carbonate, as an inorganic base, found to be much more effective than organic base additives (triethylamine and trimethylamine). Increasing reaction temperature and time resulted to obtain higher product yields. The best biphenyl formation was observed in methanol/water (1:1) mixture with the conversion value of 98.5%, at 50 degrees C in 1-h reaction time.
URI: https://doi.org/10.1007/s11164-018-3589-4
https://hdl.handle.net/20.500.13087/1875
ISSN: 0922-6168
1568-5675
Appears in Collections:Biyoloji Bölümü Koleksiyonu
Scopus İndeksli Yayınlar Koleksiyonu
WoS İndeksli Yayınlar Koleksiyonu

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