Eco Friendly Procedure for Synthesis of Styrylpyrazoles under Solvent Free Conditions using Microwave Irradiations

In recent years the solvent free organic reactions assisted by microwaves have gained special attention7,8. The use of microwave irradiations in organic synthesis can increase the purity of resulting products, enhance the chemical yield and shorten the reaction time. Reactions on solid support without using any solvent usually with open vessel in domestic microwave ovens are currently in use for synthetic chemistry to create eco-friendly atmosphere9-11. Solvent free reaction leads to clean, eco-friendly and economic technology. In view of these facts and the interest in microwave assisted organic transformations herein a convenient and efficient method for the synthesis of styrylpyrazoles in solvent free conditions under microwave irradiation using flyash as sold support has been described. ORIENTAL JOURNAL OF CHEMISTRY