Volume 3, Issue 2
مرور بر اساس
ارسال های اخیر
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Spotlights: Chlorosulfonic acid: A high potential reagent in catalyst design
(Islamic Azad University, Shahreza Branch, 2013-06-01)Vahid Khakyzadeh was born in Hamedan, Iran. He received his B.S. degree (Pure Chemistry) and M.S. degree (Organic Chemistry) from Bu-Ali Sina University, Hamedan, Iran, at 2008, 2010 respectively under supervision of ...
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Spotlights: Use of Montmorillonites in organic reactions
(Islamic Azad University, Shahreza Branch, 2013-06-01)Maryam Mashhadinezhad was born in Rasht, Guilan, I. R. Iran. She received her B. Sc in chemistry in 2009 from the University of Guilan and her M.Sc. in organic chemistry in 2011 from the same University. She is studying ...
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-Fe2O3@SiO2-PW12 nanoparticles: Highly efficient catalysts for the synthesis of pyrazoline derivatives
(Islamic Azad University, Shahreza Branch, 2013-06-01)A new type of magnetically-recoverable catalyst was synthesized by the immobilization of H3PW12O40 on the surface of silica-encapsulated -Fe2O3 nanoparticles. A series of novel 1,3,5-triaryl pyrazoline derivatives has ...
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CuO-CeO2 nanocomposite: A green recyclable catalyst for the synthesis of 3,4-dihydropyrimidin-2(1H)-ones/thiones
(Islamic Azad University, Shahreza Branch, 2013-06-01)CuO-CeO2 nanocomposite is reported as a green and highly efficient recyclable catalyst for the multicomponent synthesis of 3,4-dihydropyrimidin-2(1H)-ones/thiones under solvent-free conditions. The catalyst was synthesized ...
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Silylation of alcohols and phenols by HMDS in the presence of ionic liquid and silica-supported ionic liquids
(Islamic Azad University, Shahreza Branch, 2013-06-01)In this research, different alcohols and phenols are subjected to the reaction with HMDS in the presence of ionic liquid and silica-supported catalysts. Silylation was accomplished under mild reaction conditions at room ...
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Study of an in situ carbocationic system formed from trityl chloride (Ph3CCl) as an efficient organocatalyst for the condensation of dimedone with arylaldehydes
(Islamic Azad University, Shahreza Branch, 2013-06-01)Organocatalyst trityl chloride (Ph3CCl), by in situ formation of trityl carbocation with inherent instability, efficiently catalyzes the condensation of dimedone (5,5-dimethyl-1,3-cyclohexanedione) (2 equiv.) with arylaldehydes ...
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[BMIm]BF4-LiCl: An effective catalytic system for the synthesis of pyrano[3,2-c]chromene and pyrano[4,3-b]pyrone derivatives
(Islamic Azad University, Shahreza Branch, 2013-06-01)An efficient and green method for the synthesis of pyrano[3,2-c]chromene or pyrano[4,3-b]pyrone derivatives is described by using a three-component condensation process of malononitrile, aldehyde, and 4-hydroxycoumarine ...
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Kinetics inversion of chloro-olefine in the solid acid system
(Islamic Azad University, Shahreza Branch, 2013-06-01)The reaction kinetics of the isomerization 3,4-dichlorobutene-1 to 1,4-dichlorobutene-2 was investigated by using gas-liquid chromatography method in the presence of Fe2O3/MgO as solid catalyst in the temperature range ...
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1,3-Dibromo-5,5-dimethylhydantoin (DBH) as a cheap and efficient catalyst for the synthesis of polyhydroquinolines and 12-aryl-8,9,10,12-tetrahydro [a] xanthene-11-ones
(Islamic Azad University, Shahreza Branch, 2013-06-01)1,3-Dibromo-5,5-dimethylhydantoin (DBH), as a cheap and commercially available reagent, is efficiently able to catalyze the synthesis of polyhydroquinoline derivatives and 12-aryl-8,9,10,12-tetrahydro[a] xanthene-11-ones ...
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Silica gel: A very cheap, reusable, and efficient catalyst for green preparation of some bis-4-hydroxycoumarin on water
(Islamic Azad University, Shahreza Branch, 2013-06-01)Silica gel has been used for synthesis of biscoumarin derivatives starting from 4-hydroxycoumarin and aryl aldehydes. The reaction conditions are completely in agreement with green chemistry principles including sing water ...
