Yeni Kitosan-Glioksal Küre Destekli Pd II Katalizörü: Sentezi, Karakterizasyonu ve Suzuki Kenetlenme Reaksiyonlarindaki Uygulaması

Abstract

B u çalışmada, Suzuki çapraz kenetlenme tepkimeleri için yeni bir kitosan boncuk destekli Pd II katalizörü hazırlandı ve yapısı FTIR, XRD, TGA, SEM/EDAX ve ICP-OES analizleri ile karakterize edildi. Katalizörün, katalitik ve tekrar kullanılabilirlik performansları mikrodalga ısıtma altında ve çözücüsüz ortamda biaril bileşiklerinin sentezinde araştırıldı. Katalizör basit ve hızlı bir mikrodalga ısıtma yöntemi ileiyi dönüşüm tepkime verimleri ve yüksek TON ve TOF değerleri sağladı. Ayrıca optimum koşullar altında tekrar kullanılabilirlik testleri katalizörün beş çevrime kadar kullanılabileceğini gösterdi

Keywords

• Kenetleme tepkimeleri,biaril,tekrar kullanılabilirlik,kitosan,Schiff bazı

New Chitosan-Glyoxal Beads Supported Pd II Catalyst: Synthesis, Characterization and Application in Suzuki Coupling Reactions

Abstract

In this paper, a new chitosan bead supported Pd II catalyst was prepared and its structure was characteri- zed with FTIR, XRD, TGA, SEM/EDAX and ICP-OES analyses for Suzuki coupling reactions. The catalytic and recyclable performances of the catalyst were explored in the synthesis of biaryl compounds under microwave heating and free solvent media. The catalyst provided good conversion reaction yields and high TON and TOF values with a simple and quick microwave heating procedure. In addition, the recycle tests indicated that the catalyst could be used for up to seven runs under optimum reaction conditions.

Keywords

• Coupling reactions,biaryl,reusability,chitosan,Schiff base

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