Nano–silica supported palladium catalyst: Synthesis, characterization and application of its activity in Sonogashira cross–coupling reactions
محل انتشار: دومین کنفرانس کاتالیست انجمن شیمی ایران
سال انتشار: 1398
نوع سند: مقاله کنفرانسی
زبان: انگلیسی
مشاهده: 317
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شناسه ملی سند علمی:
ICCO02_067
تاریخ نمایه سازی: 3 اردیبهشت 1399
چکیده مقاله:
This study deals about preparation of palladium(II) complex of 3,5 – bis(2 –benzothiazolyl)pyridine supported on nano silica functionalized with trimethoxysilylpropyl chloride, Pd(II)Cl2 – BTP@TMSP – nSiO2. The synthesized heterogeneous catalyst was characterized by FT ‒ IR,UV – Vis spectroscopies, field emission scanning electron microscopy, energy dispersive X ‒ ray analysis, transmission electron microscopy and elemental analysis. Furthermore, the Pd (II)Cl2 –BTP@TMSP – nSiO2 was found as a highly efficient catalyst in the Sonogashira cross ‒ coupling of aryl halides (iodides, bromides and chlorides) with phenyl acetylene. This heterogeneous catalyst was easily recyclable and reused several times without significant loss of reactivity. Finally, its catalytic activity was compared with homogeneous catalyst to demonstrate the effect of supporting on the catalytic activity.
کلیدواژه ها:
نویسندگان
Zahra Dehbanipour
Department of Chemistry, Catalysis Division, University of Isfahan, Isfahan ۸۱۷۴۶ – ۷۳۴۴۱, Iran
Majid Moghadam
Department of Chemistry, Catalysis Division, University of Isfahan, Isfahan ۸۱۷۴۶ – ۷۳۴۴۱, Iran
Shahram Tangestaninejad
Department of Chemistry, Catalysis Division, University of Isfahan, Isfahan ۸۱۷۴۶ – ۷۳۴۴۱, Iran
Valiollah Mirkhani
Department of Chemistry, Catalysis Division, University of Isfahan, Isfahan ۸۱۷۴۶ – ۷۳۴۴۱, Iran