Effect of Trifluoromethyl Substitution on C-3 Position in 1H NMR of Quinolones / Coumarins
Journal Title: JOURNAL OF ADVANCES IN CHEMISTRY - Year 2014, Vol 8, Issue 3
Abstract
The structural assignment of differently substituted quinolones / coumarins was reviewed using 1H NMR spectral data. In case of quinolones / coumarins, with varied substitutions at C-4 and different positions of the benzenoid ring, there is a great variation in the 1H NMR value of the proton only attached with C-3. It was observed that when different substitutions (methyl / amino / hydroxy / acetoxy / trifluoromethyl) were carried out at C-4 position, maximum deshielding with the proton attached with C-3 was observed with trifluoromethyl substitution. The observation is same even with the variation in different groups at the benzenoid ring.Â
Authors and Affiliations
Anjali Gupta, Rajinder K. Gupta
Keywords
Related Articles
- EP ID EP652661
- DOI 10.24297/jac.v8i3.4053
- Views 166
- Downloads 0
Enhanced Antimicrobial activities of Hybrid ZnMgAlO nanocomposite by soft chemical method
In the present investigation, ZnMgAlO nanoparticles were prepared by soft chemical method. The synthesized NPs were analyzed by XRD and SEM EDAX. ZnMgAlO crystal structure was confirmed through powder XRD technique as...
Chemical and Biological Leaching Methods to Remove Heavy Metals from Sewage Sludge: A Review
The removal of heavy metals (HMs) in sewage sludge (SS) is important since sludge is often disposed or applied on farmland to enhance soil fertility. The present study reviewed two conceptual approaches (chemical and bio...
Preparation of activated carbon from date palm trunks for removal of eosin dye
Date palm trees are abundant and cheap natural resources in Saudi Arabia. In this study, an activated carbon was prepared from palm trunks by chemical processes. The chemical activation was performed by impregnation of t...
Anti-Diabetic Activity Of Aqueous Extract Of Pithecellobium Dulce Benth Fruit Peel On Streptozotocin Induced Diabetic Rats
The decoction of the Pithecellobium dulce fruit peel has been used for the control of diabetes mellitus in the traditional method adopted by the local people of northwest region of Tamil Nadu, India. The present study wa...
ANALYSIS OF AC/DC/AC CONVERSION PROCESS IN DFIG AND BLDC MACHINE BY USING SEPIC CONVERTER IN THE FRONT END
One of the most common solutions to the problem of feeding a three-phase induction motor from a single-phase line is using AC/DC/AC converter. An AC/DC/AC converter is composed by two stages, rectifying and inverting. Th...