κ-Carrageenan as an efficient, green, bifunctional and reusable catalyst for one-pot synthesis of Hantzsch 1,4-dihydropyridine
محل انتشار: بیستمین کنگره شیمی ایران
سال انتشار: 1397
نوع سند: مقاله کنفرانسی
زبان: انگلیسی
مشاهده: 349
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شناسه ملی سند علمی:
IRANCC20_771
تاریخ نمایه سازی: 28 اردیبهشت 1398
چکیده مقاله:
Developing chemical processes using more environmentally acceptable catalysts, chemicals and atom efficient procedures have been emerged as subjects of innovation in green chemistry. For instance, the terrible impact of non-biodegradable wastes is still an open challenge in either developed or developing countries. In this regard, great efforts have been performed to use different bio-based feedstocks such as chitosan, chitin, starch, cellulose, gelatin, wool and alginates as biopolymeric support in the transition metal-based heterogeneous catalytic systems. On the other hand, multicomponent reactions have been recognized as a vast improvement for synthetic chemists. Multicomponent reactions are the reactions with three or more substratets, which lead to the production of complex molecules, especially heterocyclic complex products.1-3 Carrageenan is a natural carbohydrate (polysaccharide) obtained from edible red seaweeds. Carrageenans are used in a variety of commercial applications as gelling, thickening, and stabilising agents, especially in food products and sauces. Carrageenans are also used in pharmaceutical, drug delivery, cosmetics, experimental medicine and textile industries.4Kappa-Carrageenan was found to be an efficient, bifunctional, recyclable, economical, environment-friendly and green catalyst for the one-pot multicomponent synthesis of 1,4-dihydropyridines (1,4-DHPs) via the Hantzsch reaction. The mild reaction conditions, short reaction times, good yields and the nontoxic catalyst make this method especially attractive.5, 6
نویسندگان
Nahid Musivand
Department of Chemistry, Iran University of Science & Technology, Tehran ۱۶۸۴۶۱۳۱۱۴, Iran
Mohammad G. Dekamin
Department of Chemistry, Iran University of Science & Technology, Tehran ۱۶۸۴۶۱۳۱۱۴, Iran
Ghasem Rezanejade Bardajee
Department of Chemistry, Payame Noor University, P.O. BOX, ۱۹۳۹۵-۳۶۹۷, Tehran, Iran