Organic Chemistry (OC)
Recent Submissions
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Studies on the vapour-phases oxidation of somealcohols in a fixed, bed reactor
Mechanism of the vapour?phase oxidation of alcohols over ferric molybdate catalyst was investigated in a fixed?bed isothermal differential flow reactor. Ring?substituted 1?phenylethanols were used as the organic substrates ... -
Synthetic investigations in steroids: a new approach to the total synthesis of estrone and its analogues.
The object of the present investigation is to develop a new strategy for the synthesis of aromatic steroids and their analogues. The thesis entitled “SYNTHETIC INVESTIGATIONS IN STEROIDS: A NEW APPROACH TO THE TOTAL SYNTHESIS ... -
Factors influencing the chemical shift a case study with a, a,-DI-tert butylthioaceric esters
The assignment of structures to two forms of ?,? di tert butylthioacetic esters, detected by NMR, is the subject matter of this thesis entitled “Factors Influencing the Chemical Shift - A Case Study with ?,? Di tert ... -
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 ... -
Studies of Arabinomannan Glycans in Carbohydrate-Protein Interactions and Thermotropic Liquid Crystal Behavior
This thesis investigates the structural and functional roles of multivalency and self-assembly of arabinomannan-based glycoconjugates and glycolipids. Synthetic arabinomannan oligosaccharides were prepared, with defined ... -
Studies in terpenns dyhydrogenation studies of abietic acid woth tetrachloro-o-Benzo quinone and a novel route
The thesis entitled "Studies in Terpenes - Dehydrogenation studies of abietic acid with tetrachloro-o-benzoquinone and a novel route to the synthesis of (I) methyl dehydroabietate and (II) methyl 13-methoxydeisopropyldeh ... -
Synthetic investigation in steroids
The thesis entitled “Synthetic Investigations in Steroids” consists of four chapters. Chapter I is a brief review on the total synthesis of aromatic steroids. The problems associated with the development of the total ... -
Studies on black damar
The work embodied in this thesis has been broadly classified into four chapters. Chapter I contains a short introduction to the natural resins and resin oils, briefly summarizing their history and romantic establishment ... -
Studies on synthetic methods
Conversion of amidomethyl function into aldehyde group Amidomethylated aromatic derivatives on treatment with N-bromosuccinimide produced the corresponding aromatic aldehydes in good yields. Attempted introduction of ... -
Supramolecular assemblies of bile acid derivatives
In the early literature, self-associative behaviors of bile acids and bile acid salts were known. Owing to their amphiphilic nature, bile acids can form supramolecular self-assemblies in the form of micelles, helical ... -
In vivo and in vitri biotransformation of terpenoids in rats
Terpenoids are ubiquitous in nature and living systems are exposed to these compounds. Although the metabolism of these compounds in mammals has been studied since the beginning of the century, the exhaustive investigation ... -
Studies in sulphanilamides and sulphones
STUDIES IN SULPHANILAMIDES AND SULPHONES SECTION A: STUDIES ON SULPHANILAMIDES Part I: Introduction This part deals, in brief, with (i) the history and advance of chemotherapy, (ii) discovery and development of the ... -
Synthetic approaches towards 1,24-dihydroxyvitamin D3 and analogues
A formal total synthesis of 1?,24(S)- and 1?,24(R)-dihydroxyvitamin D? (14 and 13) starting from the abundantly available cholic acid (71) is described in this chapter. Cholic acid (71) was first converted into methyl ... -
Study of transient state structures of quinones from Resonance Raman Spectroscopy
The time-resolved resonance Raman spectra of the triplet excited state, radical anion, and semiquinone radical of bromanil have been recorded. Observed vibrational modes have been assigned for all three transient species ... -
investigation of vilsmeier- haack reaction on homoallyic
The thesis entitled "Investigation of Vilsmeier-Haack Reaction on Homoallylic, Allylic and Benzylic Alcohols" consists of seven chapters. Chapter 1 contains an account of the investigation of Vilsmeier reaction on the ... -
Supramolecular chemistry : A bile acid based approach
Chapter 1 Contains three parts: Part A – Describes the design, synthesis, and evaluation of a bile acid-based adenine/biotin receptor. Part B – Discusses the site-specificity of adenine binding observed for aliphatic and ... -
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 ... -
Ru(II)-catalyzed C-H activation: Amide-directed 1,4-addition of Ortho C-H bond to maleimides
Transition metal-catalyzed functionalization of C–H bond to C–C bond is advantageous and atom-economical. The use of directing groups is intended to overcome the challenges associated with C–H activation, such as low ...
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