J. Iran. Chem. Soc., Vol. 8, No. 3 September 2011, pp.851~856.
Current location: JICS Archive > Vol. 8 > No. 3 > Articles : 25
Tungstophosphoric Acid Supported on Silica Gel (H3PW12O40/SiO2) as an Eco-Friendly, Reusable and Heterogeneous Catalyst for the Synthesis of Pyrroles in Solution or under Solvent-Free Microwave Irradiation
A.A. Jafari*, H. Mahmoudi and B.F. Mirjalili
*Department of Chemistry, Faculty of Science, Yazd University, Yazd 89195-741, Iran
Heteropoly acid supported on silica gel (H3PW12O40/SiO2) is easily used as a heterogonous, reusable and efficient catalyst for the synthesis of N-substituted, 2- and 3-unsubstituted pyrroles in solution or under solvent-free microwave irradiation. The catalyst can be easily recovered and reused for several times without loss of activity.
Keywords: H3PW12O40/SiO2, Pyrrole, Clauson-Kass reaction, Microwave, Solvent-free, Amine
