etd AT Indian Institute of Science: Recent submissions
Now showing items 441-460 of 8174
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search for new reactions studies with aluminium iodide
The thesis entitled "Search for New Reactions – Studies with Aluminium Iodide" consists of five chapters. The first chapter explores the scope and limitations of aluminium iodide as an ether-cleaving reagent. Its usefulness ... -
Synthesis and physical studies in heterocyclic systems.
The research described in this thesis entitled "Synthesis and Physical Studies in Heterocyclic Systems" had its origin in an attempt to answer the question: "Does the placement of a substituent on a phenyl ring affect its ... -
pathways in aromatic oxidation mechanistic on the reactions of aromatic substrate with periodic acid
The thesis entitled "Pathways in Aromatic Oxidation – Mechanistic Studies on the Reactions of Aromatic Substrates with Periodic Acid" is divided into six chapters. The first chapter discusses the mechanisms of oxidation ... -
Norrish type 1 Cleavage reactions of cyclobutanethiones and media
The thesis entitled "Norrish Type I ?-Cleavage Reactions of Cyclobutanethiones and Photochemical Studies in Micellar Media" has been divided into two parts. Part I deals with the strain-assisted ?-cleavage reactions of ... -
Photochemical studies on thiocarbonyl compounds
The thesis entitled "Photochemical Studies on Thiocarbonyl Compounds" consists of five chapters. The photochemical processes studied are Norrish Type I (?-cleavage) and photooxidation reactions. The thiocarbonyls chosen ... -
Synthetic studies in terpenoids.
The thesis entitled "Synthetic Studies in Terpenoids" consists of six chapters. In Chapter 1, the first total synthesis of 8, a norsesquiterpene occurring in the plant Isocoma wrightii, is described. Succinoylation of ... -
Synthesis of heterocycles
The thesis entitled "Synthesis of Heterocycles" consists of three chapters. An unusual reaction wherein potassamide in liquid ammonia converts substituted 5,6-dihydroisoquinolines to the corresponding stable 1,2-dihydroi ... -
Studies in fulvene cycloadditions and in optical resolutions
This thesis entitled "Studies in Fulvene Cycloadditions and in Optical Resolutions" presents, in two parts and five chapters, the following: Studies on the 1,3-dipolar cycloaddition reaction of 6,6-diphenylfulvene with ... -
Studies in oxidation of aromatic substrates
The thesis entitled "Studies in Oxidation of Aromatic Substrates" is divided into four chapters. Chapter I starts with a brief review of the reactions of organic substrates with peroxydisulphate. This chapter describes the ... -
Studies in organic reaction mechanisms
The thesis entitled: "STUDIES IN ORGANIC REACTION MECHANISMS" "STUDIES ON SOME PSEUDO AND NORMAL ACID CHLORIDES" is divided into five chapters. Chapter I gives an introduction to the investigations described in the later ... -
Synthetic investigations on steriods
The objective of the present investigation was to develop a total synthesis of racemic and optically active steroids utilizing the CD-intermediate, 2,6,7,7a-tetrahydro-1?-hydroxy-4-formyl-7a?-methylindene (I). The literature ... -
Studies in ring-chair ..... group effects
The thesis entitled "Studies in Ring-Chain Tautomerism" consists of four chapters and an appendix. A study of the kinetics of alkaline hydrolysis of methyl 3-benzoylpropionate, methyl 4-benzoylbutyrate and methyl ... -
Studies in the stereochemistry of alkylation importance of gegenion co-ordination
This thesis describes investigations into the effects of methyl and ester functions as substituents syn-axial to the ?-centre in 6-cyclic carboxylic esters when ?-enolate formation is attempted. The effects manifest ... -
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 ... -
Approaches to the total synthesis of steroids
The thesis is divided into two chapters. Chapter I – Section B describes the work done independently by the author. The rest of the work was carried out under the guidance of Professor D.K. Banerjee. Chapter I: The ... -
Synthetic studies in terpenoids.
The thesis entitled "Synthetic Studies in Terpenoids" consists of two parts. The first and major part is devoted to terpenoid synthesis. In this, the synthesis of nine naturally occurring sesquiterpenoids, viz., (+)-nuciferol, ... -
Investigations in alycyclic chemistry : synthetic and stereochemical investigations in bicyclo (2.2.1) heptane and cyclopentane systems
The thesis entitled "Investigations in Alicyclic Chemistry: Synthetic and Stereochemical Investigations in Bicyclo[2.2.1]heptane and Cyclopentane Systems" is divided into three Parts. Part I is divided into three Sections. In ... -
Synthetic studies in terpenoids.
The thesis entitled "Synthetic Studies in Terpenoids" consists of five chapters and embodies accounts of: (1) a review for the first time of cuparenoid (arylcyclopentane) sesquiterpenes, (2) a new synthesis of p-cuparenone, ... -
Studies on oxidation of naphthols using tetrachloro-o-benzoquinone. Ph.D. Thesis.9
The thesis entitled "Studies on Oxidation of Naphthols using Tetrachloro-o-benzoquinone" consists of three chapters and an Appendix. Chapter I is a brief introduction to the chemistry of oxidative coupling of phenols. Use ... -
synthesis investigations in terpenes
The thesis, entitled "Synthetic Investigations in Terpenes", consists of two chapters. Chapter I describes briefly the isolation, elucidation of the structure, determination of the absolute configuration and the reported ...