Browsing Division of Chemical Sciences by Title
Now showing items 46-65 of 1480
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Asymmetric Catalysis, Transition metal catalysis, Allylation, Propargylic alkylation, Cooperative catalysis and nonadjacent stereocenter
Transition metal catalysis has transformed asymmetric synthesis by enabling precise control of stereocenters, essential for bioactive molecules. This thesis outlines a systematic investigation of stereochemical complexity ... -
Asymmetric Catalysis: From Atroposelective Organocatalysis to Iridium-Catalyzed Generation of Central Chirality
Thesis Abstract: This thesis, entitled as “Asymmetric Catalysis: From Atroposelective Organocatalysis to Iridium-Catalyzed Generation of Central Chirality” is divided into three chapters. Chapter 1, highlights the ... -
Asymmetric Synthesis of Amino Acid Derivatives and Total Synthesis of Biologically Active Natural Products
The thesis describes the development of synthetic method for the synthesis of -amino acid esters, amides, thioesters using Ellman sulfinimines. The procedure developed was further utilized in the synthesis of di and tri ... -
Asymmetric Synthesis Of Troger's Base Analogues And Studies In Molecular Recognition
(Indian Institute of Science, 2005-04-25)Troger's base was the first amine to be resolved where the chirality was due to solely very high inversion barrier around nitrogen atom. Though the molecule was known for over a century, work done during the past decade ... -
Atomic-Scale Insights into the Conversion Chemistry of Metal Chalcogenides using Advanced Electron Microscopy for Structure-Property Correlation
Conversion chemistry is a pivotal technique for transforming pre-synthesized nanocrystals into new materials with precise control over their properties. The investigation of phase transformations and conversions in 2D metal ... -
Atto-second Dynamics in Molecular Systems
The thesis describes the attosecond dynamics of small molecular systems, focusing on ionization delay times and hole migration delay times. These time delays are some of the fastest events in electronic dynamics. When an ... -
B, N containing π- conjugated systems: room temperature phosphorescence, fullerene complexation, and cell differentiation
Advances in heteroatom (B, N, and B-N) incorporated π-conjugated systems have attracted considerable attention because of their desirable properties and widespread applications. Substitution of isoelectronic B–N units for ... -
Basic studies on electromechanical power sources - Voltage transients, alternating current impedance and steady state discharge characteristics of magnesium-manganese dioxide dry cells and supplementary investigation on titanium-substrate cobalt oxide and magnetite anode development for electrosynthesis
The extended shelf life of high-energy primary batteries based on lithium, magnesium, and aluminum is primarily attributed to the presence of a protective passive film on the surface of the reactive metal anode. Evaluating ... -
Benzimidazole Based Novel Ligands For Specific Recognition Of Duplex And G-Quadruplex DNA
(2013-07-17)The thesis entitled “Benzimidazole based Novel Ligands for Specific Recognition of Duplex and G-Quadruplex DNA” deals with the design, synthesis and modeling of several benzimidazole based molecules and their interaction ... -
Benzyltriethylammonium Tetrathiomolybdate : applications in organic synthesis
Benzyltriethylammonium Tetrathiomolybdate: Applications in Organic Synthesis This thesis deals with the chemistry of benzyltriethylammonium tetrathiomolybdate, [PhCH?NEt?]?MoS?, and its utility as a reagent in organic ... -
Bile Acid Based Molecular Tweezers And Crown Ethers
(Indian Institute of Science, 2005-05-02)Chapter 1. Introduction to Molecular Tweezers Whitlock and Zimmerman developed a class of molecular hosts, popularly known as molecular tweezers, which sandwich aromatic guests by ii=ii interaction. Chapter 1 summarizes ... -
Bile Acid Based Supramolecular Gels, Semiconductor Nanocrystals And Soft Hybrid Materials
(2016-04-12)Chapter 1. General Introduction This chapter gives an introduction to supramolecular organo/hydrogels and the related bile acid chemistry touching upon the gelation properties of the bile acid derivatives. Diverse ... -
Bile Acid based Supramolecular Gels, Soft Hybrid Materials and their Applications
(2017-12-16)Chapter 1. Supramolecular Gels and their Applications Supramolecular gels are viscoelastic materials composed of a solid like three dimensional fibrillary network that is embedded in a liquid. Supramolecular gels are derived ... -
Bile Acid Derived Adaptive Dendrons And Anion Receptors
(2011-02-15)Chapter 1. Bile acid derived adaptive dendrons Bile acids are naturally occurring rigid, chiral molecules with unique facial amphiphilicity making it an attractive build block for designing supramolecular systems. ... -
Bile Acid-Based Chiral Auxiliaries In Asymmetric Synthesis
(2012-12-10) -
Bile Salts in Supramolecular Chemistry: Synthesis of Fluorescent Nanoclusters, Oxide Nanoflowers, and Anion Effect on Metallogels
In summary, we have explored an interesting pH-dependent sensitization of Tb(III) using methyl salicylate (MS) as a sensitizer in aqueous media. Methyl salicylate was found to be a specific sensitizer for Tb(III) but not ... -
Binding of 9-N-butyladenine with carboxylic acids : Studies on the watson-crick vs. Hoogsteen selectivity
It’s been shown that if the carboxylic group of the acid is in resonance with the adjacent R group, a net preference for the HG site is observed. If the resonance is disrupted in case of aromatic acids by tilting the plane ... -
Binding, activation, and oxidative addition of dihydrogen using Ir-pincer systems and implications in hydrogenation catalysis
Binding of unreactive small molecules, such as H2, N2, CO2, CH4, etc. on a transition metal center and their subsequent activation are fundamental problems that have been extensively studied in organometallic chemistry for ... -
Bio-inspired Materials : Antioxidant and Phosphotriesterase Nanozymes
(2018-01-28)Bio-inspired or biomimetic chemistry deals with the replication of the nature’s fundamental processes, which can help in understanding the functioning of biological systems and develop novel applications. Although a large ...