Green condensation reaction of aromatic aldehydes with active methylene compounds catalyzed by anion-exchange resin under ultrasound irradiation

Hafedh Belhadj Ammar; Manef Chtourou; Mohamed Hédi Frikha; Mahmoud Trabelsi

doi:10.1016/j.ultsonch.2014.07.018

Green condensation reaction of aromatic aldehydes with active methylene compounds catalyzed by anion-exchange resin under ultrasound irradiation

Ultrason Sonochem. 2015 Jan:22:559-64. doi: 10.1016/j.ultsonch.2014.07.018. Epub 2014 Jul 30.

Authors

Hafedh Belhadj Ammar¹, Manef Chtourou², Mohamed Hédi Frikha², Mahmoud Trabelsi²

Affiliations

¹ Laboratory of Applied Chemistry: Heterocyclics, Fats and Polymers, Faculty of Sciences, University of Sfax, Soukra Street Km 3.5, 3038 Sfax, Tunisia. Electronic address: hbelhadjammar@yahoo.fr.
² Laboratory of Applied Chemistry: Heterocyclics, Fats and Polymers, Faculty of Sciences, University of Sfax, Soukra Street Km 3.5, 3038 Sfax, Tunisia.

PMID: 25112685
DOI: 10.1016/j.ultsonch.2014.07.018

Abstract

To realize a practical and green chemistry, two important challenges need to be addressed, namely the effective process for the activation of reaction and efficient, eco-friendly and robust chemical methods for the reaction conversion to target products via highly selective catalytic and reactions. Ultrasonic energy promotes the conversion process through its special cavitational effects. Combined with anion-exchange resin as a heterogeneous, reusable and efficient catalyst, Ultrasonic energy enhances the Knoevenagel condensation and leads to reduced reaction time at lower reaction temperature with less amounts of solvent and catalyst.

Keywords: Anion-exchange resin; Green chemistry; Knoevenagel condensation; Ultrasonic energy.

Publication types

Research Support, Non-U.S. Gov't