A novel ligand-metal complex immobilized on magnetic graphene oxide as a magnetic nanocatalyst for the coupling reactions

Publish Year: 1397
نوع سند: مقاله کنفرانسی
زبان: English
View: 386

متن کامل این Paper منتشر نشده است و فقط به صورت چکیده یا چکیده مبسوط در پایگاه موجود می باشد.
توضیح: معمولا کلیه مقالاتی که کمتر از ۵ صفحه باشند در پایگاه سیویلیکا اصل Paper (فول تکست) محسوب نمی شوند و فقط کاربران عضو بدون کسر اعتبار می توانند فایل آنها را دریافت نمایند.

  • Certificate
  • من نویسنده این مقاله هستم

استخراج به نرم افزارهای پژوهشی:

لینک ثابت به این Paper:

شناسه ملی سند علمی:

IRANCC20_429

تاریخ نمایه سازی: 28 اردیبهشت 1398

Abstract:

Nanoparticles are attractive candidates as solid supports for the highly active and recyclable catalytic systems. They can combine the advantages of both homogeneous and heterogeneous catalysts [1]. Superparamagnetic nanoparticles can be well dispersed in a reaction solution, providing a large surface. After the end of the reactions, the nanoparticles can be isolated efficiently from the product solution through a simple magnetic separation process [2]. Graphene oxide (GO), being an important derivative of graphene, possesses many carboxyl and hydroxyl groups, which makes it an excellent supporting matrix for growing and anchoring of nanostructured catalysts [3].In the present study, a magnetic nanocatalyst containing a ligand for the metal ion is prepared on the surface of the graphene oxide magnetized with Fe3O4 as illustrated in Fig. 1. The improved Hummers’ method is used to synthesize the graphene oxide from graphite powder. Then, magnetic graphene oxide (MGO) is prepared through coprecipitation of FeCl3•6H2O and FeCl2•4H2O in the presence of GO. Thereupon, MGO is functionalized with Nitrogen-containing ligand such as aminophenanthroline via amidation reaction between carboxyl groups of GO and amine group of the ligand. The latter is treated with the metal ion to generate magnetic nanocatalyst appropriate for the C–N cross-coupling of amides with aryl halides

Authors

Maryam Abaszadeh

Department of Organic Chemistry, Faculty of Chemistry, University of Mazandaran, Babolsar, Iran

Rahman Hosseinzadeh

Department of Organic Chemistry, Faculty of Chemistry, University of Mazandaran, Babolsar, Iran