Journal
GREEN CHEMISTRY LETTERS AND REVIEWS
Volume 10, Issue 3, Pages 148-153Publisher
TAYLOR & FRANCIS LTD
DOI: 10.1080/17518253.2017.1330428
Keywords
Pyrazole systems; 1,2-dibenzoylhydrazines; green method; solvent-free conditions; tetrabutylammonium bromide
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In this paper, we offered a green, environment-friendly, novel and inexpensive method for the synthesis of a series of pyrazole derivatives. The reaction took place in the presence of tetrabutylammonium bromide, a commercially available organic ionic salt, at room temperature under solvent-free conditions. All products were confirmed by infrared radiation, nuclear magnetic resonance and elemental analysis. Yields of products were 75-86%. [GRAPHICS] .
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