A5029054457- Synthesis and biological activity
- Synthesis and Biological Evaluation
- Multicomponent Synthesis of Heterocycles
- Quinazolinone synthesis and applications
- Catalytic C–H Functionalization Methods
- Chemical Synthesis and Analysis
- Chemical Synthesis and Reactions
- Synthesis and Characterization of Heterocyclic Compounds
- Synthetic Organic Chemistry Methods
- Click Chemistry and Applications
- Carbohydrate Chemistry and Synthesis
- Phenothiazines and Benzothiazines Synthesis and Activities
- Synthesis of Organic Compounds
- Synthesis and Catalytic Reactions
- Microwave-Assisted Synthesis and Applications
- Natural product bioactivities and synthesis
- Structural and Chemical Analysis of Organic and Inorganic Compounds
- Bioactive natural compounds
- Asymmetric Synthesis and Catalysis
- Asymmetric Hydrogenation and Catalysis
- Biological Activity of Diterpenoids and Biflavonoids
- Biodiesel Production and Applications
- Carbon dioxide utilization in catalysis
- Lubricants and Their Additives
- Biological Stains and Phytochemicals
Andhra University
2015-2024
Indian Institute of Management Visakhapatnam
2016-2020
Dr. Reddy's Laboratories (India)
2015-2016
University of Hyderabad
2014
Laila Impex (India)
2006-2013
Sri Venkateswara University
2004-2011
Indian Institute of Chemical Technology
2006
Sri Padmavati Mahila Visvavidyalayam
2006
An efficient Hantzsch condensation of polyhydroquinoline derivatives was reported via a fourcomponent coupling reaction aldehydes, dimedone, ethyl acetoacetate and ammonium acetate in the presence HClO 4 -SiO 2 under solvent-free conditions.Operational simplicity, use an economically convenient catalyst, high yield, short times are key features this protocol.
Several attempts have been made for green synthesis of copper oxide nanoparticles (CuO-NPs) using different plant extracts. The present study revealed that, antibacterial and CuO-NPs were synthesized ecofriendly non-toxic Balanites aegyptiaca stem bark extract. biosynthesized characterized by UV-Vis analysis, Fourier Transform Infrared analysis (FTIR), X-ray diffraction (XRD), Scanning Electron Microscopy (SEM), Energy Dispersive X-Ray (EDX) Transmission (TEM) analysis. In addition, the...
An environmentally benign protocol is described for the synthesis of 3,4,5-trisubstituted 1,2,4-triazoles and N-fused via ceric ammonium nitrate catalyzed oxidative cyclization amidrazones aldehydes using polyethylene glycol as recyclable reaction medium. This effective toward various substrates having different functionalities. The easy recyclability medium makes process economic potentially viable commercial applications.
Abstract A convenient and efficient protocol has been developed for the synthesis of 1,2,4‐triazoles, N ‐fused 1,2,4‐triazoles 1,2,4‐oxadiazoles using molybdenum hexacarbonyl where, first time, acts as a reliable solid source carbon monoxide. This procedure provides an easy access to library 1,2,4‐triazole, 1,2,4‐triazole 1,2,4‐oxadiazole derivatives in fair good yields without need gaseous monoxide palladium catalysts. magnified image
Two new homoisoflavonoids, (E)-7-methoxy-3-(4′-methoxybenzylidene)chroman-4-one (1) and (E)-7-hydroxy-3-(3′,4′,5′-trimethoxybenzylidene)chroman-4-one (5), along with three known homoisoflavonoids (Z)-7-hydroxy-3-(4′-methoxybenzylidene)chroman-4-one (isobon ducellin) (2), (E)-7-hydroxy-3-(4′-methoxybenzylidene)chroman-4-one (bonducellin) (3) (E)-7-hydroxy-3-(2′,4′-dimethoxybenzylidene)chroman-4-one (4) were isolated from the whole plant of Caesalpinia pulcherrima. The structures these...
Two naturally occurring homoisoflavonoids (3h,3i) and nine analogs (2a-2i) have been synthesised from appropriately substituted phenols thorough 1-(2-hydroxyphenyl)-3phenylpropane-1-ones (1a-1i).The anti-oxidant anti-fungal activities were determined by superoxide (NBT) Agar cup method respectively.The reaction of with triethylorthoformate 70% perchloric acid followed aqueous hydrolysis the intermediate perchlorates, corresponding homoisoflavones are obtained in excellent yields.Thereafter,...
An efficient <italic>n</italic>-Bu<sub>4</sub>NI/TBHP-catalyzed protocol for C–N bond formation <italic>via</italic> cross-dehydrogenative coupling of 1<italic>H</italic>-1,2,4-triazoles (N–H) and methylarenes (C<sub>sp3</sub>–H) has been developed under metal free conditions.
Abstract Hantzsch 1,4-dihydropyridines and polyhydroquinoline derivatives were synthesized in good yields by PEG-mediated, catalyst–free synthesis under solvent-free conditions. The products directly recrystallized from hot methanol. reaction gave excellent with low- as well high-molecular-weight polyethylene glycols.
Abstract The facile and efficient one‐pot construction of benzimidazoles benzoxazoles through the Mo(CO) 6 ‐mediated carbonylation aryl halides was examined. In process, acted as a convenient safe solid source carbon monoxide. A wide range substrates were tolerated to provide corresponding products in fair good yields without need gaseous CO or palladium catalysts.
A mild and efficient one-flask method has been developed for the synthesis of chromones, isoflavones, homoisoflavones from 2-hydroxyacetophenones, deoxybenzoins, dihydrochalcones, respectively, via one-carbon extension using complex 2,4,6-trichloro-1,3,5-triazine/dimethylformamide. Deoxybenzoins dihydrochalcones were prepared in situ by reaction readily available substituted phenols with phenylacetic acids 3-phenylpropanoic acids, respectively. This allows a wide range compounds multiple...
Urea/thiourea have been identified as an effective ammonia surrogate in the construction of quinazolin-4(3H)-one ring. This strategy afforded a simple and catalyst-free synthesis 2-substituted 2,3-dihydroquinazolin-4(1H)-ones quinazolin-4(3H)-ones via reaction isatoic anhydride aryl aldehydes presence urea or thiourea ethanol. The proceeded well to afford its dihydro derivative, depending on nature carbonyl compounds employed.