Zeolite (ZSM‐5) as a Highly Efficient and Heterogeneous Catalyst for the Synthesis of β‐Enaminones and β‐Enamino Esters

Abstract

Severalβ-enaminones andβ-enaminoesters have been synthesized in high yields from amine andβ-diketone in the presence of Zeolite (ZSM-5) as a catalyst. This method is applicable to both cyclic and acyclic ketones with aromatic and aliphatic amines.

Synthesis and Characterization of some biologically active transition metal complexes for a ligand derived from dimedone with mixed ligands.

“…These β-enaminones usually prepared from the reaction of aromatic and aliphatic amines with β-dicarbonyl compounds using catalyst [6][7][8][9][10][11][12].…”

A Mild and Efficient Method for Synthesis of b-Enaminones using Melamine-Formaldehyde Resin Supported H+ Under Solvent Free Conditions

“…The conventional route for the synthesis of enaminones is condensation between 1,3dicarbonyls and amines. Various catalysts have been used to affect the synthesis of β-enaminones: these include the use of β-cyclodextrin 7 , ytterbium triflate 8 , HClO 4 •SiO 2 9 , silica chloride 10 , B 2 O 3 /Al 2 O 3 11 , NaHSO 4 /SiO 2 12 , dilute HCl 13 , [(PPh 3 )AuCl]/AgOTf 14 , bismuth(III) trifluoroacetate 15 , molecular iodine 16 , Amberlyst-15 ®17 , zeolite (ZSM-5) 18 , CoCl 2 •6H 2 O 19 , silica sulphuric acid 20 and ferric(III) ammonium nitrate 21 . Some of these synthetic approaches suffer from harsh reaction conditions, long reaction time, use of costly catalysts and volatile organic solvents and low to moderate yields.…”