Author/Authors :
Yahyazadehfar, Mahdieh Department of Chemistry - Kerman Branch Islamic Azad University, Kerman, Iran , Ahmadi, Ali Department of Chemistry - Kerman Branch Islamic Azad University, Kerman, Iran , Sheikhhosseini, Enayatollah Department of Chemistry - Kerman Branch Islamic Azad University, Kerman, Iran , Ghazanfari, Dadkhoda Department of Chemistry - Kerman Branch Islamic Azad University, Kerman, Iran
Abstract :
Known as a Lewis acid which acts as a natural catalyst, bentonite can be used to produce several arylidene (thio) barbituric acid derivatives through conducting a Knoevenagel reaction between aromatic aldehydes and (thio) barbituric acid. Water is considered as the medium for this reaction and the results are at arange of good to excellent over a reasonable reaction time. This method is natural and economic as well as convenient to work with, while the reaction time is also short. In
addition to excellent results, this method is also environment-friendly due to the use of water as solvent that broadens the domain of organic synthesis in aqueous medium.
Keywords :
Natural catalyst , Bentonite (Al2O3.4SiO.H2) , Arylidene (thio) barbituric acids , Water media , Knoevenagel condensation
