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Original Article

ECB. 2013; 2(12): 971-974


Co-DOPED ZnS NANOPARTICLES AS A RECYCLABLE CATALYST FOR AQUEOUS MEDIATED SYNTHESIS OF 2,4,5- TRIARYL-1H-IMIDAZOLES UNDER ULTRASONIC IRRADIATION

Anshu Dandia, Vijay Parewa, Amit Sharma, Kuldeep S. Rathore, Amit Sharma.




Abstract

Facile and efficient synthesis of 2,4,5-triarylimidazoles has been achieved by employing three-component one-pot reaction using aromatic
aldehydes, benzil and NH4OAc in the presence of Co doped ZnS nanoparticles in water under ultrasonic irradiation. Doping of Co
promotes the activity and selectivity of ZnS nanoparticles indicated by high TOF value. The protocol offers advantages in terms of higher
yields, short reaction times, and mild reaction conditions, with reusability of the catalyst

Key words: Aqueous medium, Co doped ZnS nanoparticles, Heterogeneous catalyst, 2,4,5-triaryl-1H-imidazoles






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