Author
L. S. Tarar
Other affiliations: Spanish National Research Council
Bio: L. S. Tarar is an academic researcher from Kurukshetra University. The author has contributed to research in topics: Carbon-13 NMR & Proton NMR. The author has an hindex of 2, co-authored 5 publications receiving 49 citations. Previous affiliations of L. S. Tarar include Spanish National Research Council.
Topics: Carbon-13 NMR, Proton NMR, Tautomer, Hydrogen bond, Methyl group
Papers
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TL;DR: In this paper, it was shown that the primary reaction products between dehydroacetic acid and p-chlorophenylhydrazine or 4-phenylthiazol-2-yl hydrazine are 4-acetylacetyl-5-hydroxypyrazoles.
31 citations
TL;DR: A series of 4-pyrazolylquinolines have been prepared from β-dicarbonyl compounds and the previously proposed diazepine structure for the reaction products has been ruled out.
18 citations
TL;DR: A series of 4-pyrazolylquinolines have been prepared from β-dicarbonyl compounds and the previously proposed diazepine structure for the reaction products has been ruled out as discussed by the authors.
Abstract: A series of 4-pyrazolylquinolines have been prepared from 4-hydrazinoquinolines and β-dicarbonyl compounds and the previously proposed diazepine structure for the reaction products has been ruled out. A 13C nmr study established the 3-position of the methyl group when two isomers were possible. Finally, a careful 1H nmr study of 2- and 4-pyrazolylquinolines led to the conclusion that intramolecular hydrogen bonds between aromatic (or heteroaromatic) C-H and pyridine like nitrogens is the factor that determines the conformation of these compounds.
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163 citations
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TL;DR: In this paper, the carbon-13 chemical shifts and coupling constants of 1168 pyrazoles are reported, some of them in several solvents, and discussed on the basis of statistical treatment and qualitative comparisons.
Abstract: The carbon-13 chemical shifts and coupling constants of 1168 pyrazoles are reported, some of them in several solvents. These data are briefly discussed on the basis of statistical treatment and qualitative comparisons.
110 citations
TL;DR: In this paper, α,β-unsaturated carbonyl compounds, obtained by the reaction of DHA and aromatic (or heteroaromatic) aldehydes, with o -aminothiophenol results in the formation of 1,5-benzothiazepines and/or 1,4-benzinothiazines depending upon the reaction conditions and structure of the aldehyde.
77 citations
TL;DR: Six compounds from this series were found to be equipotent or more potent than the commercial antibiotics (Linezolid and Cefroxime axetil) and tested for their in vitro antibacterial activity against three Gram-positive and two Gram-negative bacteria.
74 citations