etd AT Indian Institute of Science: Recent submissions
Now showing items 21-40 of 8370
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X-ray crystallographic investigations on polarized twisted ethylenes
The thesis entitled “X-ray crystallographic investigations on polarized twisted ethylenes” deals mainly with the studies carried out by the candidate on the details of molecular geometry and conformation of six push–pull ... -
Sterol aide chain cleavage by micro-organisms
Isolation, maintenance and identification of microorganisms are described. A novel method of strain selection is adopted using a model compound isooctylcyclopentane (I). Garden soil was treated first with cholesterol ... -
X-ray crystallographic investigation of strained small rings and some photoreactive coumarins
The thesis entitled, “X?ray Crystallographic Investigations of Strained Small Rings and Some Photoreactive Coumarins” has been divided into two parts. Part I deals with the structural investigations of four cyclopropane ... -
Synthetic and physicochemical studies in the aza-hetroaroamtics and amonoiminipropenes
This thesis entitled, "Synthetic and Physico?chemical Studies in the Aza?heteroaromatics and Aminoiminiopropenes" consists of descriptions of methods leading to the formation of 2,6?disubstituted?7?nitroindazoles via a ... -
Physicochemical interactions in synthetic templates
This thesis entitled “physicochemical interactions on synthetic templates” is divided into three sections. Since the unifying theme of the work is the use of affinity chromatographic techniques for the purification of ... -
Crystals and molecular structures
The thesis entitled “The Crystal and Molecular Structures of Push–Pull Ethylenes” deals with the structure and conformation of eight push–pull ethylenes. Ethylenes substituted with electron?donating and electron?accepting ... -
Excited state behaviour of substituted cyclopropenethiones and thioketenes and photochemical investigations in cyclodextrins
The thesis entitled “Excited State Behaviour of Substituted Cyclopropenethiones and Oxyketenes and Photochemical Investigations in Cyclodextrins” is divided into three parts. Part A deals with the strain?assisted ??cleavage ... -
Synthetic investigations on the degradation product of bile acids
She thesis consists of two parts, Part I After introducing the importance of Wieland’s tricarboxylic acid (obtained by the degradation of bile acids), in the elucidation of their structures, the synthesis of the gross structure ... -
Physicochemical interactions on synthetic templates. Ph.D. Thesis
The thesis entitled "Physicochemical interactions on synthetic templates" can be subdivided into three main sections. The first section is a general introduction dealing with templates. The second section deals with some ... -
Synthetic studies in B-Nonsteroids
Chapter I Describes the objectives of the present work. Chapter II Embodies the syntheses of the key intermediates for the synthesis of several B-norsteroids: (i) 4,7-dimethoxy-3,3-dimethylindanone (2.1), (ii) ... -
Studies on the synthesis and physico- chemical properties of polyperoxides and copolyperoxides
The synthesis and spectroscopic characterization of three polymeric peroxides of styrene monomers with substituents in the para position are discussed. NMR spectroscopy revealed the alternating copolymer structure with ... -
Combustion synthesis and properties of fine particles spinel, Perovskite and K2NiF4 Type oxides
Technologically important fine?particle, mixed?metal, transition?metal oxides such as spinels (MCr?O?), perovskites (LnCrO?, La(Sr)MnO?, LaCoO? and LaNiO?) and K?NiF??type oxides (La?CoO?, La?NiO?, La?CuO? and La?.?Sr?.?CuO?) ... -
X-ray crystallographic investigations on metal complexes of nucleic acid constituents
Abstract not available -
Kinetic and synthetic investigation of the reactions os halogeno and arlyosycyclophosphazenes
The reaction of hexafluorocyclotriphosphazene, N?P?F? (14), with sodium phenoxide in THF yields phenoxy?substituted fluorocyclotriphosphazenes of all degrees of substitution. The results obtained in this investigation ...