Browsing Division of Chemical Sciences by Title
Now showing items 472-491 of 950
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N-Heterocyclic Carbene (NHC)-Catalyzed Stereoselective Synthesis of Six-Membered Heterocycles and Carbocycles
N-Heterocyclic carbene (NHC) based catalysis is employed for the generation of α,β-unsaturated acylazoliums followed by their interception with various nucleophiles, the formal [3+3] annulation reactions for the construction ... -
N-Heterocyclic Carbene-Catalyzed Enantioselective Synthesis of Dihydrothiopyranones, Functionalized Benzofurans and Extending Michael Acceptor Aldimine Umpolung
Carbenes exhibit high reactivity as divalent species with six electrons in their valence shell. Their electrophilic nature arises from an incomplete octet. However, when a heteroatom is introduced adjacent to the carbene ... -
N-Heterocyclic Carbene-Catalyzed Enantioselective Synthesis of C-O Axially Chiral Diaryl Ethers, Tricyclic Lactones and Lactams
N-heterocyclic carbene (NHC)-catalyzed transformations with distinctive activation modes allow the facile synthesis of atropoisomers. In this context, we have demonstrated the NHC-catalyzed synthesis of axially chiral diaryl ... -
N-Heterocyclic Carbene-Catalyzed Synthesis of Oxazolones, e-Lactones and N-N Axially Chiral Molecules
The diverse reactivity of N-heterocyclic carbenes (NHCs) in organocatalysis is due to the possibility of different modes of action. Although NHC-bound enolates and dienolates were well-known, the NHC-bound cross-conjugated ... -
Nanomaterials for Magnetism and Catalysis
Nanomaterials possess unique physical and chemical properties allowing for advancement and innovation in diverse scientific and technological fields. The remarkable magnetic and catalytic properties of these nanomaterials ... -
Nanoparticle Mediated Suppression of Protein Aggregation
(2018-05-11)The increasing demands for biopharmaceuticals to treat different diseases have raised concerns about controlling the quality and efficacy of such pharmaceuticals. The design and formulation of a stable protein or peptide ... -
Nanostructured Assemblies Based On Metal Colloids And Monolayers: Preparation, Characterisation And Studies Towards Novel Applications
(Indian Institute of Science, 2005-12-08)Nanoscience dominates virtually every field of science and technology in the 21st century. Nanoparticles are of fundamental interest since they possess unique size- dependent properties (optical, electrical, mechanical, ... -
Nanostructurization of Transition Metal Silicides for High Temperature Thermoelectric Materials
(2018-03-06)Transition Metal Silicides (TMS) are well known refractory materials because of their high thermal and structural stability at elevated temperature. In addition TMS materials are known for their moderate thermoelectric ... -
Nature of Local Interactions at cisPro-Aro Peptide Sequences in Proteins : Evidences for van der Waals type Interactions. Design and Synthesis of Novel Covalent Surrogates for the Peptide Hydrogen Bond
(2017-12-03)This thesis titled, “Nature of Local Interactions at cisPro-Aro Peptide Sequences in Proteins: Evidences for van der Waals type Interactions. Design and Synthesis of Novel Covalent Surrogates for the Peptide Hydrogen Bond”, ... -
Nature Of Solute-Solvent Interaction : Effect Of Solvent Polarity On Excited State Structure Of 2,2,2-Trifluroacetophenone And Effect Of Hydrogen Bonding In Hydrated Electron Absorption Spectrum
(2009-09-02)In solution, the environment around the solute is determined solely by the solvent molecules, which are present closer to the solute. This interaction between solute and solvent shell is very crucial for equilibrium structure ... -
New Anions In The Assembly Of The Open-Framework Compounds : Synthesis, Structure And Properties
(2013-02-18)Open-framework inorganic materials constitute an important area of study in materials chemistry, because of their potential applications in areas such as sorption and catalysis. After the discovery of nanoporous aluminium ... -
New Anthraquinone & Xanthone based Ligands as Potential Anti Cancer Agents via Selective Stabilization of G Quadruplex DNA and Theoretical Insights into G Quadruplex RNA Binding with Certain Small Molecules
In recent years, different small molecules have been synthesized for selective stabilization of G-quadruplex DNA structures over the most abundant double-stranded duplex DNA. Stabilization of G-quadruplex DNA by small ... -
New Avenues to Transition Metal-Based Water Splitting Electrocatalysts
Solar energy is by far the most abundant renewable resource available to mankind. However, it is diffused and intermittent, and often geographically separated from that of the production results in underwhelming utilization ... -
A New Class of Boron-Nitrogen Compounds : A Rational Approach for the Design and Development of Smart Materials
Replacing nonpolar homodiatomic C=C unit in a fully carbon -conjugated system with an isoelectronic polar heterodiatomic B-N fragment is an active area of research. The first BN/CC isosterism was demonstrated seven decades ... -
New Class of Tricoordinate Boron Based Donor-Acceptor (D-A) Systems Exhibiting External Stimuli Responsive Properties, Delayed Emission and Room Temperature Phosphorescence
The main thrust of this thesis is the design and development of a new class of boron-based acceptors, with a substituent which maintains good electronic coupling between boron and the other substitutes on boron, without ... -
New DNA-Targeting Small Molecules as Potential Anticancer Agents and for in vivo Specificity toward Enhanced Silk Production
(2018-05-10)The thesis entitled “New DNA-Targeting Small Molecules as Potential Anticancer Agents and for in vivo Specificity toward Enhanced Silk Production” encompasses design, computational calculations, and syntheses of diverse ... -
New NMR Methods with high resolution and sensitivity for rapid data analysis
work is focused on: (i) Development of new fast and sensitivity enhanced NMR methods in solution state and their application to metabolomics and (ii) development of novel NMR methods in solution state for the rapid resonance ... -
New Supramolecular Ion Sensing Probes And Their Application In The Detection Of Environmentally Relevant Ions
(2016-03-04)The thesis entitled “New Supramolecular Ion Sensing Probes and their Application in the Detection of Environmentally Relevant Ions” deals with the design and synthesis of several small molecular probes which can specifically ...