Nashrieh Shimi va Mohandesi Shimi Iran

Nashrieh Shimi va Mohandesi Shimi Iran

Convenient and efficient synthesis of tertrasubstituted imidazolethiones using new cobalt complex as catalyst under solvent- free conditions

Document Type : Research Article

Authors
sadegh allameh
Mohammad Shaker
Maryam Jabbari
Department of Chemistry, Mashhad Branch, Islamic Azad University, Mashhad. IRAN
Abstract
In this research, an one- pot, three-component, efficient and environment friendly synthesis of some imidazolethiones using a new cobalt catalyst was  described. The catalyst used in this reaction is a complex of Co(II) based on 5-nitro-N1-((pyridin-2-yl)methylene)benzene-1,2-diamine ligand, which was first used in the synthesis of tertrasubstituted imidazolethiones. The reaction was performed under solvent-free conditions with benzoin, different arylisothiocyanates and primary aromatic amines in the presence of optimal amount of catalyst. The advantages of this method include simple procedure, short reaction time, high yields, recyclability of catalyst and the absence of any toxic and hazardous solvents.
Keywords
Imidazolethione
Cobalt Complex
Three-component Reaction
Reusable Catalyst

Subjects

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