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Synthesis and Biological Studies of Novel Heterocyclic Derivatives

Thesis Info

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Author

Ghafoor, Abdul

Program

PhD

Institute

The Islamia University of Bahawalpur

City

Bahawalpur

Province

Punjab

Country

Pakistan

Thesis Completing Year

2016

Thesis Completion Status

Completed

Subject

Chemistry

Language

English

Link

http://prr.hec.gov.pk/jspui/bitstream/123456789/10657/1/Abdul%20Ghafoor%20Final%20thesis%2001-01-2016.pdf

Added

2021-02-17 19:49:13

Modified

2024-03-24 20:25:49

ARI ID

1676727435878

Similar


Using pyrazolones and amino pyrazole as precursors, many pyranopyrazole and bis-pyrazole derivatives were prepared. Among these, the following pyranopyrazoles have been synthesized by three components, one pot condensation reactions of aryl aldehydes, malononitrile and 3-Methyl-1-Phenyl pyrazoline-5-one: In case of bis-pyrazoles, two different synthetic approaches have been investigated. One with arylaldehydes and active methylene compounds (cyanoacetamide, ethyl cyanoacetate or diethyl malonate) using triethylamine as base. In second approach, (Z)-2-cyano-3-arylacrylamide reacts with two moles of 3-Methyl-1-Phenyl pyrazoline-5-one to give the bis-pyrazole derivatives
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