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Ni-nanoparticles: An efficient catalyst for the synthesis of quinoxalines

Paper ID Volume ID Publish Year Pages File Format Full-Text
52253 46867 2008 7 PDF Available
Title
Ni-nanoparticles: An efficient catalyst for the synthesis of quinoxalines
Abstract

Biologically active quinoxalines were efficiently synthesized in excellent yields and in less reaction time using inexpensive, monodispersed and easily recyclable Ni-nanoparticles. In order to elucidate the role of the Ni-nanoparticles, a control reaction was conducted using glyoxal and o-phenylenediamine in acetonitrile in the absence of Ni-nanoparticles. Quinoxaline was formed in around 10 h with a 30% yield. However, the same reaction carried out in acetonitrile using 10 mol% of Ni- nanoparticles (14–18 nm) at 25 °C and stirred under N2 gave quinoxaline in quantitative yield in 10 min. The separation of the product was facile and the catalyst could be separated and recycled by mild centrifugation. Our method is very quick, avoids the use of expensive reagents, high temperatures (our reaction takes place at room temperature) and leads to excellent yield.

Keywords
Quinoxalines; Ni-nanoparticles; Monodispersed; Recyclable
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Publisher
Database: Elsevier - ScienceDirect
Journal: Catalysis Communications - Volume 9, Issue 5, 20 March 2008, Pages 778–784
Authors
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Subjects
Physical Sciences and Engineering Chemical Engineering Catalysis
Get Full-Text Now
Don't Miss Today's Special Offer
Price was $35.95
You save - $31
Price after discount Only $4.95
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