A5101484884- Synthesis and biological activity
- Synthesis of Organic Compounds
- Multicomponent Synthesis of Heterocycles
- Oxidative Organic Chemistry Reactions
- Synthesis and Biological Evaluation
- Molecular Sensors and Ion Detection
- Metal-Organic Frameworks: Synthesis and Applications
- Synthesis and Characterization of Heterocyclic Compounds
- Photochromic and Fluorescence Chemistry
- Advanced Nanomaterials in Catalysis
- Radical Photochemical Reactions
- Synthesis of heterocyclic compounds
- Click Chemistry and Applications
- Phenothiazines and Benzothiazines Synthesis and Activities
- Luminescence and Fluorescent Materials
- Sulfur-Based Synthesis Techniques
- Synthesis of Indole Derivatives
- Synthesis and Reactions of Organic Compounds
- Electrochemical Analysis and Applications
- Synthesis and Biological Activity
- Structural and Chemical Analysis of Organic and Inorganic Compounds
- Electrochemical sensors and biosensors
- Ginger and Zingiberaceae research
- Analytical Chemistry and Sensors
- Social and Economic Development in India
Punjabi University
2013-2023
Bridge University
2022
Bangladesh Council of Scientific and Industrial Research
2012-2013
Kurukshetra University
2002-2006
Guru Jambheshwar University of Science and Technology
2006
Panjab University
2006
This review provides a comprehensive survey relating to the synthesis and biological applications of pyrazolines related heterocycles in last five years (2007–2011). These compounds are usually prepared from cyclization chalcones with hydrazine its derivatives under alcoholic conditions. The major incentive behind these was immense activities associated heterocyclic derivatives. aim this is find out different methods for pyrazoline
This review article describes the survey of literature regarding variety synthetic methods 1,3,4-thiadiazoline and related compounds in last seven years (2004–2010). The aim is to find out different for synthesis thiadiazolines. These heterocyclics are majorly obtained from cyclization reactions thiosemicarbazone under various conditions. From studies it was found that major importance given their pharmaceutical significance i.e., biological activity against fungal bacterial strains.
In the present investigation, a novel series of pyrazolines 2a–2d were synthesized by cyclization various -1-[2-(alkoxy) phenyl]-3-(thiophen-2-yl) prop-2-en-1-one 1a–1d with N-substituted phenyl hydrazine and thiosemicarbazide in presence CH3COOH NaOH ethanol which lead to formation new pyrazolines. The structures these compounds elucidated by, IR, 1H-NMR, 13C-NMR, ESI-MS spectral data their purities confirmed elemental analyes. vitro antibacterial activity was evaluated against two...
Novel compounds with antibacterial properties: pyrazoline derivatives were synthesized by the cyclization of various -1-[2-(alkoxy)phenyl]-3-(furan-2-yl) prop-2-en-1-one 1a–1d N-substituted phenyl hydrazine in presence CH3COOH ethanol. The structures these elucidated by, IR, 1H NMR, 13C ESI-MS spectral data and their purities confirmed elemental analyses. vitro activity was evaluated against two Gram-positive Gram-negative bacteria Aeromonas hydrophila, Yersinia enterocolitica, Listeria...
Cyclization of various different alkoxy [1-[2-(alkoxy)phenyl]-5-(furan-2-yl)-prop-2-en-1-one] chalcone with thiosemicarbazide in the presence NaOH ethanol afforded a series novel 1-N-substituted cyclized pyrazoline analogues [5-(furan-2-yl)-3-[2-(alkoxy) phenyl]-4,5-dihydro-1H-pyrazole-1-carbothioamide 2a–2d. The structures these compounds were elucidated by IR, 1H NMR, 13C Fab mass spectrometry and their purities confirmed elemental analyses. In vitro antibacterial activity evaluated disk...
Photochemical reaction is a chemical initiated by the absorption of energy in form light resulting different types reaction. Chromones, bischromones and anthraquinones are bichromophoric molecules which contain carbonyl group double bond conjugation. reactions these compounds result formation such not obtained via conventional methods. This review article describes photochemical transformations chromones, anthraquinone derivatives here main emphasis has been laid upon intramolecular...
Abstract The bisthiadiazolines 3a – 3h built around the alkyl chains of varying lengths have been synthesized in good yields by refluxing bisthiosemicarbazones 2a 2h acetic anhydride. reactions bisaldehydes 1a 1h with thiosemicarbazide alcoholic medium provided and former were obtained using reported methods. formation stereochemical features are found to be independent internal spacer length. intermediates bisheterocyclic compounds characterized means IR, 1 H NMR, 13 C Mass (ESI) elemental analysis.
The symmetrical bisheterocycles built around varying lengths aliphatic linkers have been synthesized from the easy cyclization reactions of bischalcones with phenyl hydrazine by refluxing in dry EtOH and glacial acetic acid medium. intermediates turn were prepared good yields O-alkylation hydroxy substituted chalcone suitable 1,ω-dibromoalkanes presence anhydrous K2CO3, acetone Bu4N+I− as PTC. was obtained Claisen–Schmidt condensation reaction p-hydroxyacetophenone 2-furfuraldehyde....
This account provides a survey of phototransformations chromones occurring through the cycloadditions, oxidations, isomerizations and reorganizations.Photochemistry variety bischromones intramolecular photo-H-abstractions thus leading to angular tetracyclic photoproducts has also been reviewed.In bischromones, photoproduct formations their distributions were found be dependent upon length structure intermediate spacer units.
Abstract magnified image Photoreorganisations of some 3‐allyloxy‐2‐thienylchromones have been described. The photoreactions are initiated through the intramolecular H‐abstraction to provide angular tetracyclic compounds. These chromones yield good chemical efficiency due involvement highly stabilized allylic 1,4‐biradicals.
Abstract A new series of 1,2,4‐triazole was designed, synthesized, and characterized as remarkable antimicrobial antioxidant agents. These heterocycles have been prepared from the cyclization reactions Schiff bases 3 ( a‐k ) with phenylhydrazine by refluxing under alkaline medium. The in turn were realized good yields condensation N ‐phenylurea different aromatic aldehydes. structures intermediates final 4 fully through their spectral parameters.