Elham Tahanpesar

[ 1 ] - Nanoalumina sulfonic acid catalyzed rapid N-formylation under solvent-free conditions

A rapid and chemoselective method for the N-formylation of structurally diverse anilines with formic acid using nanoalumina sulfonic acid (NASA) at 70oC under solvent-free condition has been developed. The catalyst was found to be compatible with different functional groups and the formylation proceeded smoothly with anilines bearing electron withdrawing as well as electron donating substituents.

[ 2 ] - Synthesis and Application of New Oxidant bis(banzyltriphenylphosphonium) peroxodisulfate on Oxidation of Benzylhalides to Corresponding Benzylaldehyde Compounds

Put the peroxodisulfate ion (S2O82-) in the phase transfer catalyst banzyltriphenylphosphonium can make a catalyst with mild oxidation property, and used it for oxidation of Benzylhalides to corresponding Benzylaldehyde Compounds. For making catalyst used xylene and water as solvent, and it was an easy process with high yield. Oxidation used in reflux condition with acetonitrile as solvent. The...

[ 3 ] - AlCl3 supported on nano silica as an efficient catalyst for the preparation of coumarin

The Pechmann condensation has been used as a simple and efficient method for the preparation of coumarin derivatives, which phenols and ethyl acetoacetate were reacted in the presence of AlCl3 supported on nano silica as an efficient catalyst at 110 oC under solvent free condition to form products with good to excellent yield (55 -90%), which are identified by spectroscopic method ( FT-IR, NMR)...

[ 4 ] - AlCl3 supported on nano silica as an efficient catalyst for the preparation of coumarin

The Pechmann condensation has been used as a simple and efficient method for the preparation of coumarin derivatives, which phenols and ethyl acetoacetate were reacted in the presence of AlCl3 supported on nano silica as an efficient catalyst at 110 oC under solvent free condition to form products with good to excellent yield (55 -90%), which are identified by spectroscopi...

[ 5 ] - Synthesis and Application of New Oxidant bis(banzyltriphenylphosphonium) peroxodisulfate on Oxidation of Benzylhalides to Corresponding Benzylaldehyde Compounds

Put the peroxodisulfate ion (S2O82-) in the phase transfer catalyst banzyltriphenylphosphonium can make a catalyst with mild oxidation property, and used it for oxidation of Benzylhalides to corresponding Benzylaldehyde Compounds. For making catalyst used xylene and water as solvent, and it was an easy process with high yield. Oxidation used in reflux condition ...