Silzic (ZnCl₂/SiO₂) as a New and Recyclable Zinc (II) Catalyst for One-pot Three-component Syntheses of β-aminocarbonyl Compounds under Solvent-free Conditions

Abbas Ali Jafari* and Fatemeh Moradgholi

Department of Chemistry, Faculty of Science, Yazd University, Yazd 89195-741, Iran

* Corresponding author: E-mail: Jafari@yazduni.ac.ir
Tel.: +98 3518211674; fax: +98 351 8210690

Abstract
Silzic (ZnCl₂/SiO₂) is an efficient and recyclable catalyst for one-pot three-component coupling reaction of aldehydes, amines and ketones to produce the corresponding β-aminocarbonyl compounds in high yields under solvent-free conditions. The advantages of this protocol are high yields, mild reaction conditions, simple work-up and less environmental pollution. In addition, the preparation of silzic is simple and has higher activity than homogeneous ZnCl₂.

Keywords: Silzic, ZnCl₂, mannich reaction, β-aminocarbonyl compounds, solvent-free.