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صفحه اصلی
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بیست و نهمین کنفرانس شیمی آلی ایران
Immobilized Bronsted acidic ionic liquid on magnetic cellulose as a novel catalyst for the synthesis of triazolo[4,3-a]pyrimidine derivatives
نویسندگان :
Azar Jahanbakhshi ( دانشگاه یاسوج ) , Mahnaz Farahi ( دانشگاه یاسوج )
کلید واژه ها :
Cellulose،Ionic liquid،Fe3O4،Triazolo[4،3-a]pyrimidine
چکیده مقاله :
Cellulose, as one of the most critical natural organic polymers, can be used as nanocomposite, support materials, and emulsions because of various advantages such as biocompatible, thermal stability, and ability to modify its surface chemistry and hydrophilicity. The hydroxyl groups on the surface of cellulose are reactive and facilitate chemical modification with organic and inorganic groups, thereby enhance the properties of cellulose-based materials. Ionic liquids (ILs) as eco-friendly have substantial benefits to the organic and acid-catalysis reactions. However, the immobilization of ionic liquids on different solid supports such as cellulose facilitate easy catalyst recovery, high selectivity, recyclability and less contamination of products with a catalyst [1,2]. Herein, we report the immobilization of the Bronsted acidic ionic liquid 1-(propyl-3-sulfonate) vinyl imidazolium hydrogen sulfate [IL] onto magnetically-modified cellulose. The catalytic activity of this nanocomposite was investigated in the synthesis of triazolo[4,3-a]pyrimidine derivatives (Scheme).
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