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Rezayati, S., Sajjadifar, S.. (1393). Recyclable Boron Sulfonic Acid as an Environmentally Benign Catalyst for the One-Pot Synthesis of Coumarin Derivatives under Solvent-Free Condition. , 25(4), 329-337.
S. Rezayati; S. Sajjadifar. "Recyclable Boron Sulfonic Acid as an Environmentally Benign Catalyst for the One-Pot Synthesis of Coumarin Derivatives under Solvent-Free Condition". , 25, 4, 1393, 329-337.
Rezayati, S., Sajjadifar, S.. (1393). 'Recyclable Boron Sulfonic Acid as an Environmentally Benign Catalyst for the One-Pot Synthesis of Coumarin Derivatives under Solvent-Free Condition', , 25(4), pp. 329-337.
Rezayati, S., Sajjadifar, S.. Recyclable Boron Sulfonic Acid as an Environmentally Benign Catalyst for the One-Pot Synthesis of Coumarin Derivatives under Solvent-Free Condition. , 1393; 25(4): 329-337.

Recyclable Boron Sulfonic Acid as an Environmentally Benign Catalyst for the One-Pot Synthesis of Coumarin Derivatives under Solvent-Free Condition

Journal of Sciences, Islamic Republic of Iran
مقاله 4، دوره 25، شماره 4، اسفند 2014، صفحه 329-337    اصل مقاله (256.91 K)
نوع مقاله: Original Paper
نویسندگان
S. Rezayati؛ S. Sajjadifar*
Department of Chemistry, Payame Noor University, PO BOX 19395-4697 Tehran, Islamic Republic of Iran
چکیده
A mild and green method has been developed for the preparation of coumarins derivatives through the one-pot reactions. In our study,various phenols and ethyl acetoacetate compound in which we used silica-supported boron sulfonic acid [SiO2/B(SO4H)3] as a new, highly efficient and tri-functional inorganic Brønsted acid catalyst were processed under solvent-free condition and thermal. The catalysts were separated easily from reaction mixture, regenerated after a simple activation step and reused at least six times without significant loss in catalytic activity. The most significant features of this procedure are:short period of conversion and excellent yields, simple experimental procedure, environmentally benign, the elimination of corrosive liquid acids and green aspects by avoiding toxic conventional catalysts and solvents.
کلیدواژه‌ها
Silica boron sulfonic acid؛ Heterogeneous catalysts؛ Pechmanncondensation؛ Solvent-free؛ Brønsted acid and Lewis acid catalyst
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