Department of Chemistry: Recent submissions

Now showing items 61-80 of 1020

Chemoselective Cu-catalyzed synthesis of diverse N-arylindole carboxamides, β-oxo amides and N-arylindole-3-carbonitriles using diaryliodonium salts

Kumar, Dalip (RSC, 2024-09)

Chemoselective copper-catalyzed synthesis of diverse N-arylindole-3-carboxamides, β-oxo amides and N-arylindole-3-carbonitriles from readily accessible indole-3-carbonitriles, α-cyano ketones and diaryliodonium salts has ...
Iodine(iii)-promoted regioselective and efficient synthesis of β-triazolyl BODIPYs for the selective recognition of nickel ions and bovine serum albumin

Kumar, Dalip; Sarkar, Madhushree (RSC, 2022)

Various β-triazolyl tethered BODIPYs were efficiently prepared in a sequential one-pot protocol involving the initial reaction of BODIPY with iodobenzene diacetate (IBD) and sodium azide to in situ generate BODIPY azides ...
PIFA-promoted intramolecular oxidative cyclization of pyrrolo- and indolo[1,2-a]quinoxalino-appended porphyrins: an efficient synthesis of meso,β-pyrrolo- and indolo[1,2-a]quinoxalino-fused porphyrins

Kumar, Dalip (RSC, 2022)

We have developed an efficient protocol for the synthesis of meso,β-pyrrolo- and indolo[1,2-a]quinoxalino-fused porphyrin systems 7–9 by PIFA-promoted intramolecular oxidative cyclization of easily accessible meso-pyrrolo- ...
Synthesis of Red-Light-Responsive Pheophorbide-a Tryptamine Conjugated Photosensitizers for Photodynamic Therapy

Kumar, Dalip (Wiley, 2022-11)

Six methyl pheophorbide-a derivatives were prepared by linking a tryptamine side chain at the C-131, C-152 and C-173 positions of pheophorbide-a. Prepared conjugates were characterized and evaluated for their photocytotoxicity ...
Efficient synthesis of a/b-isomeric oxadiazolyl and triazolopyridyl BODIPYs for sensing of Hg2+ ions and pH sensors

Kumar, Dalip (Elsevier, 2023-05)

A simple sequential one-pot protocol has been developed to prepare oxadiazolyl and triazolopyridyl-BODIPY derivatives 4–6 by employing iodine (III)-promoted oxidative cyclization of BODIPY hydrazide-hydrazones which are ...
A Remarkable Difference in Pharmacokinetics of Fluorinated Versus Iodinated Photosensitizers Derived from Chlorophyll-a and a Direct Correlation between the Tumor Uptake and Anti-Cancer Activity

Kumar, Dalip (MDPI, 2023-04)

To investigate and compare the pharmacokinetic profile and anti-cancer activity of fluorinated and iodinated photosensitizers (PSs), the 3-(1′-(o-fluorobenzyloxy)ethyl pyropheophorbide and the corresponding meta-(m-) and ...
BODIPY(aryl)iodonium salts in the efficient synthesis of diversely functionalized BODIPYs and selective detection of serum albumin

Kumar, Dalip; Sarkar, Madhushree (RSC, 2024-04)

BODIPY(aryl)iodonium salts were readily accessible from the high-yielding reaction of BODIPY with iodoarenes or hydroxyl(tosyloxy)iodoarenes in the presence of m-CPBA. The prepared BODIPY(aryl)iodonium salts bearing ...
Synthesis of Highly Ordered TiO2 Nanorods on a Titanium Substrate Using an Optimized Hydrothermal Method

Sarkar, Bibhas R. (Springer, 2022-02)

In this study, highly stable and well-oriented one-dimensional (1D) TiO2 nanorods were grown over a conductive titanium (Ti) substrate by optimizing various physical and chemical parameters involved in the hydrothermal ...
A Deep Learning Approach for Molecular Crystallinity Prediction

Khungar, Bharti (Springer, 2019-05)

With the success of Convolutional Neural Networks (CNN) in computer vision domain, cheminformatics is slowly moving away from feature Engineering towards Network Engineering. New deep networks and approaches are being ...
Bis-Cinnamamide Derivatives as APE/Ref-1 Inhibitors for the Treatment of Human Melanoma

Khungar, Bharti (MDPI, 2022)

Human malignant melanoma exhibits imbalances in redox status, leading to activation of many redox-sensitive signaling pathways. APE/Ref-1 is a multifunctional protein that serves as a redox chaperone that regulates many ...
A pyrazinium-based fluorescent chemosensor for the selective detection of 2,4,6-trinitrophenol in an aqueous medium

Khungar, Bharti (RSC, 2022)

Sensing nitroaromatic explosives has gained significant attention due to both increased terrorist threats and a need for environmental protection. In this regard, a fluorescent chemosensor, 1-benzyl-3,5-di(thiophen-2-yl) ...
Abnormal NHC Palladium(II) Complex Containing CNN Pincer Skeleton and Its Application to Suzuki-Miyaura Coupling of Aryl Chlorides in Water

Khungar, Bharti (Wiley, 2023-05)

The excellent catalytic activities of abnormal NHC carbene complexes, where the C2 position remains unaffected, and coordination occurs at the C4 or C5 position of the imidazolium ring, is still a fascinating but scarce ...
Luminescent triazolo-fused pyrido[3,4-b]pyrazines as novel fluorophores

Khungar, Bharti; Sakhuja, Rajeev (Elsevier, 2024-12)

A series of organic fluorophores based on novel [1,2,4]triazolo [4′,3':1,2]pyrido [3,4-b]pyrazine architecture were synthesized by a simple two-step protocol. Synthesized organic fluorophores exhibit blue-to-green fluorescence ...
Detection of TNP and sulfite ions in an aqueous medium using a pyrazinium-based chemosensor

Khungar, Bharti (RSC, 2024)

A fluorescent pyrazinium-based 1-benzyl-3,5-diphenylpyrazin-1-ium bromide (BPPyz) chemosensor was synthesized and well-characterized. A significant reduction in blue emission of BPPyz was observed in the presence of TNP ...
A selenium-coordinated palladium(ii) trans-dichloride molecular rotor as a catalyst for site-selective annulation of 2-arylimidazo[1,2-a]pyridines

Kumar, Anil (RSC, 2020)

This report describes the synthesis of a new class of secondary interaction (SeCH⋯Cl)-controlled molecular rotor having a Cl–Pd–Cl rotor spoke attached onto a Se–Pd–Se axle. NMR data acquired at various temperatures ...
Phenyliodine(III) Diacetate-Mediated 1,2-ipso-Migration in Mannich Bases of Imidazo[1,2-a]pyridines: Preparation of N-Acetoxymethyl/Alkoxymethyl-N-arylimidazo[1,2-a]pyridine-3-amines

Kumar, Anil (ACS, 2020-05)

Phenyliodine(III) diacetate -mediated 1,2-ipso-migration of an imidazo[1,2-a]pyridine ring via the formation of an aziridine intermediate in Mannich bases derived from imidazo[1,2-a]pyridines, 2-pyridylamines or arylamines, ...
Indolyl-α-keto-1,3,4-oxadiazoles: Synthesis, anti-cell proliferation activity, and inhibition of tubulin polymerization

Kumar, Anil; Kumar, Dalip (Elsevier, 2021-04)

A series of novel indolyl-α-keto-1,3,4-oxadiazole derivatives have been synthesized by employing molecular iodine-mediated oxidative cyclization of acylhydrazones. In vitro anti cell proliferation activity of these derivatives ...
Rhodium(III)-Catalyzed Dehydrogenative Annulation and Spirocyclization of 2-Arylindoles and 2-(1H-Pyrazol-1-yl)-1H-indoles with Maleimides: A Facile Access to Isogranulatimide Alkaloid Analogues

Kumar, Anil (ACS, 2021-01)

A Rh(III)-catalyzed dehydrogenative annulation and spirocyclization of 2-arylindoles and 2-(1H-pyrazol-1-yl)-1H-indole with maleimides is described. The cascade protocol provided highly functionalized benzo[a]pyrrolo[3,4 ...
TEMPO-Mediated Synthesis of Indolyl/Imidazo[1,2-a]pyridinyl-Substituted para-Quinone Methides from Butylated Hydroxytoluene

Kumar, Anil (ACS, 2021-11)

A series of indolyl or imidazo[1,2-a]pyridinyl-substituted para-quinone methides (p-QMs) is prepared by a metal-free, TEMPO-mediated cross-dehydrogenative coupling of butylated hydroxytoluene (BHT) with indoles or ...
Copper-Catalyzed One-Pot, Three-Component Synthesis of Imidazo[1,2-c]quinazolines and Benzimidazo[1,2-c]quinazolines

Kumar, Anil (Wiley, 2021-11)

A highly efficient copper-catalyzed three component, one-pot reaction has been described for the synthesis of imidazo[1,2-c]quinazolines and benzimidozo[1,2-c]quinazolines from 2-(2-bromophenyl)-1H-imidazoles/benzimidazoles ...

Now showing items 61-80 of 1020

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