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دسترسی آزاد مقاله
1 - Fe3O4@SiO2/Kit-6 as a Magnetic Nano-Catalyst for the Synthesis of New Coumarin Fused Pyrrole Derivatives
Elham Sadr Hossein Anaraki-Ardakani Soheil Sayyahi Farzaneh HosseiniA series of new coumarin fused pyrrole derivatives were successfully synthesized through a one-pot multi-component reaction between 4-aminocoumarin, aryl glyoxals, and amides (thioacetamide) in the presence of Fe3O4@SiO2/Kit-6 in ethanol under reflux conditions. Further چکیده کاملA series of new coumarin fused pyrrole derivatives were successfully synthesized through a one-pot multi-component reaction between 4-aminocoumarin, aryl glyoxals, and amides (thioacetamide) in the presence of Fe3O4@SiO2/Kit-6 in ethanol under reflux conditions. Further advantages to this synthesis include excellent yields, mild reaction conditions, atom economy, environment-friendly, magnetically reusable catalyst, and no need for chromatographic separations. پرونده مقاله -
دسترسی آزاد مقاله
2 - BF3-SiO2 Nanoparticles: An Efficient Catalyst for the Multi-Component Synthesis of 3-(α-aroylamido) 4-hydroxycoumarin Derivatives in Water
Mona Arfavi-Safari Hossein Anaraki-Ardakani Rashid Badri Elham TahanpesarA green and efficient one-pot three component reaction of 4-hydroxycoumarin or 1,3-dimethylbarbutyric acid, aryl glyoxals and amides (thioacetamide) has been developed in the presence of BF3- SiO2 nanoparticles in water. This method has several advantages such as high t چکیده کاملA green and efficient one-pot three component reaction of 4-hydroxycoumarin or 1,3-dimethylbarbutyric acid, aryl glyoxals and amides (thioacetamide) has been developed in the presence of BF3- SiO2 nanoparticles in water. This method has several advantages such as high to excellent product yields in short reaction time, atom economy, environment friendly, reusable catalyst and no need for chromatographic separations. پرونده مقاله -
دسترسی آزاد مقاله
3 - Nano SnCl2-SiO2 Catalyzed Facile Synthesis of Aryloylamido Coumarins Derivatives
Hossein Anaraki-ArdakaniA highly efficient and general method for the synthesis of aryloylamido coumarinsderivatives by a three-component condensation of 4-hydroxycoumarin or 4-hydroxy-6-methylpyran-1-one, aryl glyoxals and benzamide in the presence of nano silica supported tin(II) chloride as چکیده کاملA highly efficient and general method for the synthesis of aryloylamido coumarinsderivatives by a three-component condensation of 4-hydroxycoumarin or 4-hydroxy-6-methylpyran-1-one, aryl glyoxals and benzamide in the presence of nano silica supported tin(II) chloride as a heterogeneous catalyst is established. In this method, SnCl2/nano SiO2 wasused as green and reusable catalyst. Excellent yields, short reaction times, simple workup,and inexpensiveness and commercially availability of the catalyst are the advantages of thismethod. پرونده مقاله -
دسترسی آزاد مقاله
4 - Choline Chloride-Oxalic Acid as a Deep Eutectic Solvent Promoted Synthesis of Aroylamido Coumarin Derivatives in Excellent Yields
Hamed Asadi Hossein Anaraki-Ardakani Parviz Torabi Narges TaheriAn efficient and green protocol for synthesis of title compounds has been achieved via a one pot, three component reaction of 4-hydroxycoumarin or 4-hydroxy-6-methylpyran-1-one, aryl glyoxals and amides in choline chloride/oxalic acid as a deep eutectic solvent (DES) ha چکیده کاملAn efficient and green protocol for synthesis of title compounds has been achieved via a one pot, three component reaction of 4-hydroxycoumarin or 4-hydroxy-6-methylpyran-1-one, aryl glyoxals and amides in choline chloride/oxalic acid as a deep eutectic solvent (DES) has been described. The DES system offers advantages in terms of environmentally benign, biodegradable, short reaction times, high yield and the use of safe and inexpensive components. DES can be easily recovered and can be reused for other runs without any reduction in the activity. پرونده مقاله