Browsing Division of Chemical Sciences by Title
Now showing items 74-93 of 1480
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C-H Bond Functionalization and Tandem Cyclization with Alkynoates and Maleimides Using Directing Group Strategy
The thesis presents manganese‒ and rhodium‒catalyzed C‒H bond activation and tandem cyclization reactions. These reactions lead to the construction of carbon‒carbon bonds using directing group strategy. The thesis is divided ... -
Carbon aerogel supported first-row transition metal catalysts for methanolyis of ammonia borane
Ni-Ni3B, Co-B, and Co-Ni-B nanocomposites decorated on carbon aerogel were successfully synthesized by adopting the solution impregnation method. The nanocomposites were characterized by powder XRD, transmission electron ... -
Carbon, oxygen- and nitrogen (six membered ring) annulations
The thesis entitled "Carbon-, Oxygen- and Nitrogen- (Six Membered Ring) Annulations by Vilsmeier Reaction" consists of six chapters. Chapter 1 describes the results of investigations of the Vilsmeier reaction on known ... -
Carbon-Carbon and Carbon Heteroatom Bond Forming Reactions: From Organocatalysts to Quantum Dots
Butenolides containing stereogenic centers on the ring, are commonly encountered structural motifs, found in many natural products. Consequently, there has been considerable interest in efficient and stereoselective ... -
Catalysis through molecular association
The thesis entitled "Catalysis through Molecular Association" is divided into four chapters. The objective of the work described here was to develop a new method of ortho-carbonation of phenol in water, at room temperature ... -
Catalytic Asymmetric Direct and Vinylogous Aldol, Michael and Alkylation Reactions
Pyrazoles and pyrazolones are a highly explored and privileged class of aza-heterocycles with a wide range of applications, thereby rendering a recurring interest in their synthesis and functionalization. Majority of the ... -
Catalytic Enantioselective Allylic Alkylative Desymmetrization, Carbon-Carbon and Carbon-Heteroatom Bond Forming Reactions
In summary, we have developed a catalytic enantioselective desymmetrization of prochiral 1,3-dinitropropanes, which proceeds via enantiogroup differentiating allylic alkylation reaction. Functionalized allylic carbonates ... -
Catalytic Studies with Ru and Ir Half-sandwich Complexes Bearing NHC Ligands
The thesis describes the study of arene-tethered and untethered Ru half-sandwich complexes as catalysts in the addition of hydroelements (E‒H, E = H, B, Si) across unsaturated C-C, C-N and C-O bonds and transfer hydrogenation ... -
cContributions to the chemistry of the complex fluordes of phosphorus boron, silicon and titanium
Abstract not available -
Chain dynamics and reactivity studies on polysulfide polymers
Two new classes of polysulfide polymers, viz., PPMEPs and PPEPs, were synthesized and structurally well?characterized using spectroscopic techniques. The presence of unsaturated end groups in PPMEPs was confirmed by NMR, ... -
Charge and Heat Transport in Low-dimensional Quantum Systems
Transport of electrons through low-dimensional quantum conductors like nano-junctions has been actively pursued research area for the last few decades. Experimental studies on nano-junctions are nowadays routinely carried ... -
Charge-Transfer Associated Photoluminescence Of Rare-Earths Doped Oxide Phosphors
(2007-12-29)Luminescent materials can be found in a broad range of everyday applications. While in the seventies and eighties, the field of luminescent materials seemed to be fairly well covered, research in nineties has been revitalized ... -
Chemical Characterisation Of The Surfaces And Interfaces Of Barium Titanate And Related Electronic Ceramics
(2007-10-25)This thesis deals with the investigations on the atomic composition, chemical surface states and microstructural features of barium titanate and other electronic ceramics namely barium polytitantes, calcium manganites and ... -
Chemical investigation of vegetable oils
In this thesis are presented the author’s contributions towards the systematic analysis of some Indian vegetable oils and also the medicinal applications of some of them. These have been separated by combined fractionation ... -
Chemical models for penicillin allergenesis
The thesis entitled “Chemical Models in Penicillin Allergenesis” is divided into three chapters. Chapter I – Introduction and Background The first chapter deals with a résumé of the problem and enumerates the present status ... -
Chemical Modulation of Ferroptosis in Mammalian Cells by Synthetic Organoselenium and Gold-based Small Molecules
Oxidative stress induced by reactive oxygen species (ROS) plays a crucial role in triggering various forms of cell death, including apoptosis, autophagy, and necrosis. In recent years, a distinct and regulated form of cell ...