Synthesis of hexahydroquinolines using the new ionic liquid sulfonic acid functionalized pyridinium chloride as a catalyst, By Abdolkarim Zare

Research

Title	Synthesis of hexahydroquinolines using the new ionic liquid sulfonic acid functionalized pyridinium chloride as a catalyst
Type	Article
Keywords	Brönsted acidic ionic liquid; Sulfonic acid functionalized pyridinium chloride [Pyridine‐SO3H]Cl; Hexahydroquinoline; Solvent‐free synthesis
Journal	CHINESE JOURNAL OF CATALYSIS
DOI	10.1016/S1872-2067(12)60678-0
Researchers	Ardeshir Khazaei (First researcher) , Mohammad Ali Zolfigol (Second researcher) , Ahmad Reza Moosavi-Zare (Third researcher) , Javad Afsar (Fourth researcher) , Abdolkarim Zare (Fifth researcher) , Vahid Khakyzadeh (Not in first six researchers) , Mohammad Hassan Beyzavi (Not in first six researchers)

Abstract

Sulfonic acid functionalized pyridinium chloride [pyridine-SO3H]Cl has been synthesized as a novel Brönsted acidic ionic liquid and characterized on the basis of its FT-IR, 1H and 13C NMR, MS, thermogravimetry, and derivative thermogravimetry data. The material has also been used as a highly efficient, homogeneous, and reusable catalyst for the preparation of hexahydroquinolines according to the one-pot multi-component condensation of arylaldehydes, dimedone (5,5-dimethylcyclohexane-1,3-dione), β-ketoesters, and ammonium acetate under solvent-free conditions.