Dr.Biswajit Panda

Scopus Publications

Waste-Derived Adsorbents for the Removal of Pollutants
Biswajit Panda
Conversion and Utilization of Wastes into Sustainable Products Volume I Natural and Industrial Wastes for Functional Materials Applications, 2026
The growing concern over environmental pollution has spurred extensive research into sustainable and cost-effective methods for pollutant removal. Waste-derived adsorbents have emerged as a promising solution, leveraging abundant waste materials to create effective adsorbents for contaminants in air, water, and soil. This chapter provides an overview of the development and application of waste-derived adsorbents for pollutant removal. Waste materials, including agricultural by-products, industrial residues, and municipal solid wastes, have been extensively studied for their potential to be converted into adsorbents. These materials are not only cost-effective but also offer a sustainable way to manage waste, aligning with circular economy principles. Transformation processes such as pyrolysis, chemical activation, and physical treatments improve the adsorption properties of these materials, making them competitive with conventional adsorbents. The chapter also explores the application of waste-derived adsorbents to remove various pollutants, including heavy metals, dyes, pharmaceuticals, and other organic pollutants. Case studies highlight the practical uses of these adsorbents in real-world situations, demonstrating their potential to effectively address environmental pollution. For instance, biochar derived from agricultural waste has shown remarkable efficacy in adsorbing heavy metal pollutants from wastewater, while activated carbon produced from coconut shells is effective in removing organic dyes from industrial effluents. Furthermore, the regeneration and reusability of waste-derived adsorbents are critical aspects addressed in this chapter. Techniques for adsorbent regeneration, including thermal treatment and solvent washing, are evaluated for their effectiveness and impact on adsorption performance. The economic and environmental benefits of waste-derived adsorbents are discussed, emphasizing their role in sustainable pollution management. Thus, waste-derived adsorbents offer a versatile and sustainable approach to pollutant removal, transforming waste management challenges into valuable opportunities. This chapter aims to provide researchers and practitioners with a detailed understanding of the principles, processes, and applications of waste-derived adsorbents, encouraging further innovation and adoption in environmental remediation practices. Through continued research and development, waste-derived adsorbents have the potential to significantly mitigate pollution and contribute to a cleaner, more sustainable environment.
High-turnover palladium catalysts: Accelerating c-h activation for sustainable green catalysis
Biswajit Panda
Sustainable Green Catalytic Processes, 2024
Efficient and sustainable catalytic processes are pivotal in green chemistry, striving to minimize environmental impact and promote lasting chemical transformations. High-turnover catalysts exhibit the ability to efficiently participate in cycles, enabling multiple reactions without significant degradation. They accelerate reactions while maintaining activity over an extended period, aligning with the objective of maximizing efficiency and minimizing waste in sustainable catalysis. These catalysts enhance overall sustainability by enabling more reactions with less catalyst, reducing environmental impact and costs. Achieving high turnover involves optimizing factors like activity, selectivity, and stability, with catalyst design and engineering crucial for enhancing turnover numbers through features such as well-defined active sites and tailored ligands. The field of C-H activation is particularly noteworthy for its potential to transform unreactive carbon-hydrogen bonds directly, garnering significant attention in the pursuit of revolutionizing synthetic chemistry. Palladium catalysts have shown exceptional versatility and efficiency in a broad spectrum of C-H activation processes, such as arylation, alkenylation, alkynylation, and cross-dehydrogenative coupling reactions. The diverse applications of high-turnover palladium catalysts, showcasing their ability to facilitate the synthesis of various complex molecules more efficiently and atom-economically, have been explored. The significance of C-H activation lies in its ability to eliminate the need for prefunctionalization steps, thereby streamlining synthetic routes and reducing waste generation. By directly targeting C-H bonds, high-turnover palladium catalysts enable more sustainable and environmentally friendly catalytic methodologies. The importance of high-turnover palladium catalysts in accelerating C-H activation, emphasizing their role in advancing sustainable green catalysis, is also highlighted here. This chapter highlights the crucial role of high-turnover palladium catalysts in expediting C-H activation for sustainable green catalysis. Efficient catalysts, such as palladium, not only facilitate complex molecule synthesis but also mitigate the environmental impact of chemical processes. Ongoing research and innovation are imperative for advancing greener synthetic methodologies, with broad benefits for industries like pharmaceuticals, materials, and agrochemicals. The chapter, offering a comprehensive overview of recent advancements, challenges, and future prospects, serves as a vital resource for researchers in catalysis and green chemistry. It underscores the potential of high-turnover palladium catalysts to propel the development of sustainable and environmentally friendly catalytic methodologies, contributing to a greener future in chemical synthesis.
Use of Gold Nanoparticles in the Synthesis of Heterocyclic Compounds
Biswajit Panda
Letters in Organic Chemistry, 2023
Nanoparticles have been proven to be efficient catalysts for a variety of chemical reactions, with added advantages such as the reuse of catalysts, increasing the scale of reactions employing continuous flow techniques, and simple separation of the reaction milieu, making them green, efficient, and lucrative choices. Over the last decade, gold nanoparticles (AuNPs) have appeared as promising and efficient catalysts in the field of sustainable organic synthesis.On the other hand, heterocycles are significant scaffolds in a variety of natural products and other biologically active molecules, as well as useful compounds for organic and material chemistry. Therefore, the progress of proficient techniques for the synthesis of heterocyclic compounds is always of major significance. This mini-review focuses on some of the most important AuNPs catalyzed heterocyclic compound synthesis processes. Wherever essential, the exclusivity of the approaches has been discussed by emphasizing substrate diversity, selectivity, product yields, and mechanistic features.
Organocatalytic C-H Bond Functionalizations for the Synthesis of Heterocycles
Biswajit Panda
Current Organocatalysis, 2023
Organocatalysis is an important and rapidly growing area for the synthesis of various organic molecules. Because of the inherent non-metal properties, mild reaction conditions, and broad functional group tolerance, the use of small organic compounds encoding and converting another organic component has developed into a remarkable process. C–H activation reactions, on the other hand, have already emerged as a powerful strategy for forming C–C and C–X (X= N, O, S) bonds. Combining organocatalysis and C-H bond functionalization is highly rational as two coexisting and rapidly growing research fields in modern synthetic chemistry, and the cooperative strength along this consistent has proven to be a successful way of making C-H bond functionalization much more feasible, reliable, and specific. At the same time, the synthesis of heterocyclic compounds is an important field in organic chemistry due to the vast application of heterocycles in pharmaceuticals, polymers, and material science. This mini-review describes the recent developments in the synthesis of heterocyclic compounds through the alliance of organocatalysis and C-H bond functionalizations.
Catalytic alkynylations through the activation of C-N bonds
Biswajit Panda
Arkivoc, 2023
Activation of carbon-nitrogen sigma bonds has attracted significant attention in recent years as a promising approach for bond-breaking and bond-making with a wide range of applications. Although C-N bonds are inert, due to their high bond energy, breaking them is feasible in the presence of a suitable catalyst. This approach has been successfully applied to numerous reactions, including cross-coupling reactions, making it a popular choice in the field of organic synthesis. Among the cross-coupling reactions, the alkynylation reaction occupies a significant position since alkynes are one of the privileged intermediates for the synthesis of foremost molecules with great importance in biology, medicine, and material science. This mini-review described the developments of various efficient strategies for the alkynylation reactions through the catalytic cleavage of both C(sp 2 ) – N and C(sp 3 ) – N bonds with mechanistic insights.
Dmf as co surrogate in carbonylation reactions: Principles and application to the synthesis of heterocycles
Biswajit Panda, Gianluigi Albano
Catalysts, 2021
Transition metal-catalyzed carbonylation reactions have emerged as one of the most relevant synthetic approaches for the preparation of carbonyl-containing molecules. The most commonly used protocol for the insertion of a carbonyl moiety is the use of carbon monoxide (CO) but, due to its toxic and explosive nature, this process is not suitable at an industrial scale. More recently, the chemistry of CO surrogates has received large attention as a way to use less expensive and more environmentally friendly methods. Among the various CO surrogates, N,N-dimethylformamide (DMF) has been paid greater attention due to its low cost and easy availability. This mini-review gives appealing insights into the application of DMF as a CO surrogate in metal-catalyzed carbonylations; in particular, in the first part we will give a general state of the art of these reactions for the preparation of carbonyl-containing molecules; then, we will take into account all the various synthetic approaches for the metal-catalyzed carbonylative synthesis of heterocycles using DMF as a CO surrogate. Each protocol has been discussed critically in order to screen the best synthetic method and to offer perspective on trends and future directions in this field.
Synthetic methods for the preparation of conformationally restricted analogues of nicotine
Biswajit Panda, Gianluigi Albano
Molecules, 2021
In the context of naturally occurring nitrogen heterocycles, nicotine is a chiral alkaloid present in tobacco plants, which can target and stimulate nicotinic acetylcholine receptors (nAChRs), a class of ligand-gated ion channels commonly located throughout the human brain. Due to its well-known toxicity for humans, there is considerable interest in the development of synthetic analogues; in particular, conformationally restricted analogues of nicotine have emerged as promising drug molecules for selective nAChR-targeting ligands. In the present mini-review, we will describe the synthesis of the conformationally restricted analogues of nicotine involving one or more catalytic processes. In particular, we will follow a systematic approach as a function of the heteroarene structure, considering: (a) 2,3-annulated tricyclic derivatives; (b) 3,4-annulated tricyclic derivatives; (c) tetracyclic derivatives; and (d) other polycyclic derivatives. For each of them we will also consider, when carried out, biological studies on their activity for specific nAChR subunits.
Bioactivity of marine natural product xyloketals
Biswajit Panda, Amal Kumar Gooyee
Letters in Organic Chemistry, 2021
Oceans can play a major role in supplying life-saving medicines to the world. Although considerable progress has been made in finding new medicines from marine sources, great efforts are still necessary to examine such molecules for clinical applications. Xyloketals are an important group of natural products with various powerful and prominent bioactivities such as inhibition of acetylcholine esterase, antioxidant activity, inhibition of L-calcium channels, radical-scavenging behavior, suppression of cell proliferation, reduction of neonatal hypoxic-ischemic brain injury, etc. This review describes the isolation and structural characterization of all xyloketal natural products giving major emphasis on their bioactivity.
Sonogashira coupling of arenediazonium salts: Discovery and developments
Biswajit Panda
Arkivoc, 2021
Colourful chemistry: Arenediazonium salts represent efficient, common, easily available aryl surrogates from inexpensive anilines and show higher reactivity compare to aryl halides and triflates towards various crosscoupling reactions. We have disclosed the Sonogashira coupling of arenediazonium salts in 2010; afterward, several groups successfully developed various protocols for this reaction. This mini-review describes the discovery and progress of the alkynylation of arenediazonium salts in due time, highlights the strengths and weaknesses of each protocol.
Joy and Challenges of Alkynylation of Arenes and Heteroarenes through Double C−H Functionalizations
Biswajit Panda
Asian Journal of Organic Chemistry, 2020
Abstract A significant number of reactions have appeared in the literature regarding direct oxidative cross‐coupling of arenes and heteroarenes with terminal alkynes achieved through functionalization of C (SP 2 ) −H and C (SP) −H bonds to provide the corresponding alkynylated products. The delights and difficulties of the direct alkynylation have been discussed thoroughly to enlighten this growing area. More emphasis is given to the successful implementation and improvement of various protocols for this transformation. Wherever necessary, the uniqueness of the methods has been shown by highlighting the substrate scope, selectivity, yields along with mechanistic consideration.
Stereospecific Synthesis of Poly(methylene-E-vinylene) by Ring Opening Metathesis Polymerization of Substituted Cyclopropene Using Grubbs Catalysts
Jian-Jhih Peng, Biswajit Panda, Kamani Satyanarayana, Hau-Ren Yang, Shou-Ling Huang, Mao Jung Huang, Chun-hsien Chen, Guoqiao Lai, Yu-Ying Lai, Tien-Yau Luh
Macromolecules, 2019
Total Synthesis of Xyloketals and Related Natural Product Alboatrin: Strategies and Tactics
Biswajit Panda
Chemistryselect, 2019
Total synthesis of Bruguierols: Strategies and tactics
Biswajit Panda
Arkivoc, 2019
Small-Ring Metathesis: Delights and Difficulties
Biswajit Panda
Asian Journal of Organic Chemistry, 2018
Methoxymethylation and benzyloxymethylation of aryl bromides
Journal of the Indian Chemical Society, 2018
Synthesis and characterization of solid-phase super acid catalysts and their application for isomerization of n-alkanes
Abhishek Dhar, Abhishek Dutta, Pushan Sharma, Biswajit Panda, Subhasis Roy
Chemical Engineering Communications, 2017
Erratum: Gold and palladium combined for the sonogashira coupling of aryl and heteroaryl halides (Synthesis (Germany) (2013) 45 (817))
Tarun Sarkar, Biswajit Panda
Synthesis Germany, 2013
Gold-catalyzed benzannulation of electronically rich/rich and deficient/deficient oxoalkynes with alkynes
Tarun Sarkar, Biswajit Panda
Synthesis Germany, 2013
Gold catalysis: Regio- and stereoselective total synthesis of xyloketals D and G and the related natural product alboatrin
Biswajit Panda, Tarun K. Sarkar
Journal of Organic Chemistry, 2013
Gold and palladium combined for the Sonogashira coupling of aryl and heteroaryl halides
Tarun Sarkar, Biswajit Panda
Synthesis Germany, 2013
An approach to highly functionalized quinolines and isoquinolines via a gold-catalyzed benzannulation
Tarun Sarkar, Biswajit Panda, Jhuma Bhadra
Synlett, 2011
On the catalytic duo PdCl2(PPh3)2/AuCl(PPh3) that cannot effect a Sonogashira-type reaction: a correction
Biswajit Panda, Tarun K. Sarkar
Tetrahedron Letters, 2010
Gold and palladium combined for the Sonogashira-type cross-coupling of arenediazonium salts
Biswajit Panda, Tarun K. Sarkar
Chemical Communications, 2010
A domino Michael-Dieckmann-Peterson approach to the synthesis of substituted hydroxyquinolines and hydroxyisoquinolines
Biswajit Panda, Sankar Basak, Anindya Hazra, Tarun K. Sarkar
Journal of Chemical Research, 2010
A one-pot tandem oxidation-reduction protocol for the synthesis of cyclic ethers from their diols
Biswajit Panda, Tarun K. Sarkar
Tetrahedron Letters, 2008
Thickness and temperature dependent electrical characteristics of crystalline BaxSr1-xTiO3 thin films
B. Panda, A. Roy, A. Dhar, S. K. Ray
Journal of Applied Physics, 2007
Electrical properties of r.f. magnetron sputtered BaxSr1-xTiO3 films on multi-layered bottom electrodes for high-density memory application
B. Panda, C. B. Samantaray, A. Dhar, S. K. Ray, D. Bhattacharya
Journal of Materials Science Materials in Electronics, 2002
Thickness dependence of dielectric constant in barium strontium titanate thin films
Indian Journal of Pure and Applied Physics, 1999
M-I-S characteristics of RF sputtered high dielectric constant barium strontium titanate (BST) thin films on silicon
Proceedings of SPIE the International Society for Optical Engineering, 1998
Optical properties of RF sputtered strontium substituted barium titanate thin films
B. Panda, A. Dhar, G.D. Nigam, D. Bhattacharya, S.K. Ray
Thin Solid Films, 1998
Relationship between plasma parameters and film microstructure in radio frequency magnetron sputter deposition of barium strontium titanate
B. Panda, A. Dhar, G. D. Nigam, D. Bhattacharya, S. K. Ray
Journal of Applied Physics, 1998
Effect of electrode microstructure on leakage current in lead-lanthanum-zirconate-titanate multilayer capacitors
P. S. Asoka Kumar, B. Panda, S. K. Ray, B. K. Mathur, D. Bhattacharya, K. L. Chopra
Applied Physics Letters, 1996
Electron beam deposited lead-lanthanum-zirconate-titanate thin films for silicon based device applications
B. Panda, S. K. Ray, A. Dhar, A. Sarkar, D. Bhattacharya, K. L. Chopra
Journal of Applied Physics, 1996

Dr.Biswajit Panda

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