title: Highly efficient, quick and green synthesis of biarlys with chitosan supported catalyst using microwave irradiation in the absence of solvent.
abstract: The aim of this study was to develop a quick reaction that had high activity with a small amount of catalyst, which could be an eco-friendly alternative technique for the synthesis of biarlys in Suzuki coupling reactions. First, a novel chitosan Schiff base supported Pd(II) catalyst was synthesized, and its structure was illuminated with FTIR, (1)H NMR, (13)C NMR, TG/DTG, SEM/EDAX, XRD, ICP-OES, UV-vis, magnetic moment, and molar conductivity techniques. Subsequently, the catalytic activity of the catalyst was tested in Suzuki C-C reactions under microwave irradiation using a solvent-free reaction condition. The catalytic tests showed an excellent activity with a small load of the catalyst (0.02 mol%) in 4 min. The catalyst showed seven runs without loss of activity, and high values of turnover numbers (TON) and turnover frequency (TOF) were obtained. The novel biopolymer supported Pd(II) catalyst provided much faster reaction times, higher yields, and reusability under microwave heating compared to classic heating methods.
authors.affiliation: Department of Chemistry, Faculty of Science and Letters, Aksaray University, Aksaray 68100, Turkey. Electronic address: talatbaran_66@hotmail.com.
authors.forename: Talat
authors.initials: T
authors.lastname: Baran
authors.affiliation: Department of Chemistry, Faculty of Science and Letters, Aksaray University, Aksaray 68100, Turkey. Electronic address: edaacksz@gmail.com.
authors.forename: Eda
authors.initials: E
authors.lastname: Açıksöz
authors.affiliation: Department of Chemistry, Faculty of Science and Letters, Aksaray University, Aksaray 68100, Turkey. Electronic address: ayfermentes@yahoo.com.
authors.forename: Ayfer
authors.initials: A
authors.lastname: Menteş
mesh_terms: D002384:Catalysis; D048271:Chitosan / Q000737:chemistry*; D055772:Green Chemistry Technology / Q000191:economics / Q000379:methods*; D008872:Microwaves; D010165:Palladium / Q000737:chemistry*; D011084:Polycyclic Aromatic Hydrocarbons / Q000138:chemical synthesis* / Q000737:chemistry; D012545:Schiff Bases / Q000737:chemistry
chemical_list: D011084:Polycyclic Aromatic Hydrocarbons; D012545:Schiff Bases; D010165:Palladium; D048271:Chitosan
keywords: High TON values; Microwave irradiation; Solvent-free; Suzuki coupling reaction