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International Letters of Chemistry, Physics and Astronomy
Volume 15

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Preheated Fly-Ash Catalyzed Cyclization of Chalcones: Synthesis of some Substituted Pyrazole-1-Carbothioamides and Spectral Correlations in 3-(3,4-Dichlorophenyl)-5-(Substituted Phenyl)-4,5-Dihydro-1H-Pyrazole-1-Carbothioamides

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Abstract:

Some substituted 1-thiocarbomyl pyrazolines including 3-(3,4-dichlorophenyl)-5-(substituted phenyl)-4,5-dihydro-1H-pyrazole-1-carbothioamides using solvent-free preheated fly-ash catalyzed cyclization between chalcones and thiosemicarbazide microwave irradiation. The yields of these thiocarbomyl pyrazolines are more than 80%. The purities of these synthesised pyrazoline derivatives are checked by their physical constants and spectral data earlier reported in the literature. The spectral data of these 3-(3,4-dichlorophenyl)-5-(substituted phenyl)-4,5-dihydro-1H-pyrazole-1-carbothioamides had been correlated, using single and multi-linear regression analysis.

Info:

Periodical:
International Letters of Chemistry, Physics and Astronomy (Volume 15)
Pages:
18-34
DOI:
https://doi.org/10.18052/www.scipress.com/ILCPA.15.18
Citation:
G. Thirunarayanan and K.G. Sekar, "Preheated Fly-Ash Catalyzed Cyclization of Chalcones: Synthesis of some Substituted Pyrazole-1-Carbothioamides and Spectral Correlations in 3-(3,4-Dichlorophenyl)-5-(Substituted Phenyl)-4,5-Dihydro-1H-Pyrazole-1-Carbothioamides", International Letters of Chemistry, Physics and Astronomy, Vol. 15, pp. 18-34, 2013
Online since:
Sep 2013
Authors:
Ganesamoorthy Thirunarayanan, K.G. Sekar
Keywords:
3-(3,4-Dichlorophenyl)-5-(Substituted Phenyl)-4,5-Dihydro-1H-Pyrazole-1-Carbothioamides, Hammett Correlations, Pre-Heated Fly-Ash, Solvent-Free Synthesis
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Distribution:
Open Access

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