A5045410691- X-ray Diffraction in Crystallography
- Crystallization and Solubility Studies
- Catalytic C–H Functionalization Methods
- Oxidative Organic Chemistry Reactions
- Synthesis and Catalytic Reactions
- Chemical Synthesis and Reactions
- Natural Antidiabetic Agents Studies
- Asymmetric Hydrogenation and Catalysis
- Catalytic Alkyne Reactions
- Medicinal Plants and Neuroprotection
- Ethnobotanical and Medicinal Plants Studies
- Phytochemicals and Medicinal Plants
- Chemical Synthesis and Analysis
- Nanomaterials for catalytic reactions
- Cyclopropane Reaction Mechanisms
- Multicomponent Synthesis of Heterocycles
- Synthesis of Indole Derivatives
- Phytochemistry and biological activity of medicinal plants
- Sulfur-Based Synthesis Techniques
- Radical Photochemical Reactions
- Perovskite Materials and Applications
- Synthesis and Biological Evaluation
- N-Heterocyclic Carbenes in Organic and Inorganic Chemistry
- Synthesis and Characterization of Pyrroles
- Analytical Chemistry and Chromatography
Central Council for Research in Ayurvedic Science
2023-2025
Ministry of AYUSH
2023-2024
University of Calcutta
2015-2021
A metal-free three component cyclization reaction with amidation is devised for direct synthesis of DFT-designed amido-phenazine derivative bearing noncovalent gluing interactions to fabricate organic nanomaterials. Composition-dependent nanoelectronics nonvolatile memory devices are discovered using mixed phenazine-stearic acid (SA) We simultaneous two different types nonmagnetic and non-moisture sensitive switching resistance properties fabricated utilizing nanomaterials: (a) sample-1(8:SA...
A new bidentate directing group, 3-amino-1-methyl-1H-pyridin-2-one, is introduced to achieve a powerful PdII metallacycle for selective γ-C(sp3)–H activation and arylation of aromatic aliphatic carboxylic acid derivatives. The versatility the group validated remote β-C(sp3)–H, β-C(sp2)–H, γ-C(sp2)–H therapeutically important 2-pyridone analogues arylated synthons. traceless removal retrieve element acids makes this method more interesting.
The selective construction of medicinally and synthetically important indole-based unsymmetrical triarylmethanes using indoles aldehydes is challenging because the significant nucleophilicity indole leads to C–C coupling with an azafulvene intermediate build up alternative bis(indolyl)methane products, which may be useful synthons. A new, straightforward, ligand-free CuII catalytic strategy for easy syntheses indolotriarylmethanes new bisindolylbenzoyl analogues established through dual...
N-Heterocyclic carbene-catalyzed tandem Stetter-aldol reaction of phthalaldehyde and α,β-unsaturated ketimines has been developed to afford functionalized naphthalen-1(2H)-one derivatives as the formal [4+2] annulation product. Interestingly, aldimines led formation isoquinoline instead expected indanone a [4+1]
Unprecedented I2-catalyzed α,α-C(sp3)-H, decarboxylative α-C(sp3)-H, lactonized and α,β-C(sp3)-H functionalized 5- 6-annulation as well α-C(sp3)-H activated 6-lactonization of primary aliphatic amines are devised under aerobic conditions. The metal-free sustainable strategy was employed for the diverse construction valuable five-and six-membered polycyclic N,O-heteroaromatics such oxazoles, 1,4-oxazines, oxazin-2-one with a rapid reaction rate high yield. viability this mild nonmetallic...
A metal-free, simultaneous triple C-C coupling cyclization reaction between phenacyl bromides and indoles is discovered in a highly regioselective fashion to furnish 3,5-diarylcarbazoles. DMAP utilized as the only reagent for unusual rapid all new carbazole compounds through installation of great diversity substituents. plausible radical mechanism predicted by conducting various control experiments, competitive reactions, furoindole formation, ESI-MS analyses ongoing reaction.
The first synthesis and diverse oxidative cyclization catalysis properties of high-valent Mo<sup>VI</sup>–triazole are demonstrated towards highly selective construction benzimidazoles, benzothiazoles, isoxazolines, isoxazoles their chiral analogues.
An unprecedented p-TsOH and MsOH-catalyzed construction of valuable isoindolo/pyrido/pyrrolo-quinolinediones isoindolo-indolones is demonstrated through annulation reactions cyclic anhydrides or o-formylbenzoates with o-alkynylanilines. The metal-free Bro̷nsted acid-mediated new [5+1] [4+1] fused-cyclization an operationally simple, highly regioselective, atom economical, high yielding, sustainable, catalytically efficient approach.
An unprecedented nanofabrication of functionalized Pt-NPs under mild conditions was accomplished through oxidative insertion PtBr2 into the O–C bond ArCH(OMe)2. TEM and SEM imaging, EELS, XPS, ESI–MS analyses found NPs possessing molecular formula Br2(MeO)PtIVCH(OMe)Ph low-dimensional spherical morphology. Ketone amide functionality-bearing electrophilic cyclopropanes underwent ring-opening cyclization. Size-dependent catalytic activity investigated using stabilizers newly introduced...
Unprecedented metal-free cyclization catalysis reactions are developed in a highly regioselective fashion to synthesize 3-amino-4-benzoyl biphenyls and arylacridones with high atom economy. Catalytic K2CO3 is utilized as the only reagent for unusual rapid dual C–C-coupled between β-keto enamines cinnamaldehydes furnish functionalized biphenyls. Its C(sp2)–H C–N bond-forming was performed situ using molecular I2 catalyst valuable arylacridones. Plausible mechanisms new predicted by conducting...
Abstract Phytocompounds in medicinal plants attribute therapeutic values and are generally called biologically active markers. The fate of marker compounds comes under question when undergo different processes like crushing, grinding, boiling etc. These may degrade or decompose even attain some molecular rearrangement during these processes. As a result, plants' activities diminish vanish altogether. Therefore, the efficacy particular dosage not as it should possess, that be due to change...