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Full Screen- TITLE
- CERTIFICATE
- DECLARATION
- ACKNOWLEDGEMENT
- CONTENTS
- PREFACE
- I. Introduction
- I.1.Reactions in the Gel -Phase
- I.2. Nature and Type Of Polymer Supports
- I.3. Swelling Nature Of Functionalised Polymers
- I.4. Mechanical Properties
- I.5. Functionalisation
- I.6. Characterisation
- I.7. Effect Of Spacer Arms
- I.8. Effect Of Crosslink Density
- I.9. Advantages and Limitations Of The Polymer Supported Strategy
- I.10.Polymer -Supported Oxidising Reagents
- a. Anionic Oxidising Reagents
- b. Peracids and Peroxide Type Reagents
- c. Halogen Containing Reagents
- d. Polymer Bound Metallic Oxidising Reagents
- e. Miscellaneous Oxidising Reagents
- II. Solid-Phase Polymeric Analogues Of Chloramine-T And Bromamine-T: Preparation And Use As Synthetic Reagents
- II.1. Preparation Of N-Halo-N-Sodiopolystyrene-Sulphonamide Resins
- II.2. Synthetic Reactions Using N-Chloro/N -Bromo-N-Sodiopolystyrenesulphonamides
- a. Oxidation Of Alcohols
- b. α - Halogenation Of Ketones And Olefinic Addition Reactions
- c. N-Chlorination Of Amides Using Polymeric Chloramine-T
- d. Reactions Of Unsaturated Alcohols With Polymeric Bromamine-T
- i. Cinnamyl alcohol
- ii. Dibenzosuberenol
- iii. 3- Hexyne-2, 5 - diol
- II.3. Effect Of Reaction Conditions On The Course Of Oxidation Reactions Using N-Bromo-N-Sodiopolystyrenesulphonamide Resin
- a. Concentration Of Reagent Function
- b. Temperature
- c. Concentration Of Acid
- d. Solvent
- e. Crosslink Density
- II.4. Recyclability Of The Spent Resins
- II.5. Preparation Of N-Benzyl, N-Ethyl and N-Methyl Substituted N-Bromopolystyrenesulphonamide Resins And Synthetic Transformations Using These Reagents - A Comparative Study
- II.6. Comparison Of Polystyrene-Supported Bromamine-T With Other Polymer-Supported Halogen Containing Reagents
- III. Reactivity Of N-Bromo Resins With Differently Substituted α -Phenyl Ethanols
- Results And Discussions
- III.1. Reaction Of N- bromo resin With α -Phenyl Ethanol
- III.2. Reaction Of N- Bromo resin With P-Methyl- α -Phenyl Ethanol
- III.3. Reaction Of N- Bromo resin With P-Methoxy α --Phenyl Ethanol
- III.4. Reaction Of N-Bromo resin With P-Chloro- α -Phenyl Ethanol
- III.5. Reactivity Of N-Alkyl Substituted N-Bromopolystyrenesulphonamides
- a. N-Bromo-N-Methyl Resin
- b. N-Ethyl-N-bromo Resin
- c. N-Benzyl- N-bromo Resin
- IV. Investigation Of Thermal Stability Of Polymeric Bromamine-T And Its Precursor Resins
- IV.1.Polystyrene
- IV.2. Polystyrenesulphonic Acid
- IV.3. Polystyrenesulphonyl Chloride
- IV.4.Polystyrenesulphonamide
- IV.5. N-Sodio-N-bromopolystyrenesulphonamide
- V. Experimental
- General
- V.1. Preparation Of Polystyrenesulphonic Acid Resin
- V.2. Estimation Of Sulphonic Acid Group
- V.3. Estimation Of Sulphur in the Resin
- V.4.Polystyrenesulphonyl Chloride
- V.5. Estimation Of Chlorine In Polystyrenesulphonyl Chloride
- V.6. Preparation Of Polystyrenesulphonamide
- V.7. N-Chloro-N-Sodiopolystyrenesulphonamide Resin
- V.8. N-Bromo-N-Sodiopolystyrenesulphonamide
- V. 9. Capacity Of The N-Halo Resins
- V. 10. Oxidation And Halogenation Reactions Using Resins: General Procedure
- V.11. Recyclability Of The Spent Reagent
- V.12. Study Of Stability Of Bromo Resin In Water
- V.13. Preparation Of Polystyrene With Different Crosslink Densities
- V.14. Functionalisation Of Polystyrene Cross linked With Different Mole Percents Of Divinylbenzene
- V.15. Monitoring The Course Of Oxidation Reactions
- V.16. Preparation Of N-Methylpolystyrene sulphonamide
- V.17. Preparation Of N-Bromo-N-Methylpolystyrenesulphonamide Resin
- V.18. Preparation Of N-Ethylpolystyrenesulphonamide
- V.19. Preparation Of N-Bromo-N-Ethylpolystyrenesulphonamide
- V.20. Preparation Of N-Benzylpolystyrenesulphonamide
- V.21. Preparation Of N-Bromo-N-Benzylpolystyrenesulphonamide Resin
- V.22. Preparation Of Bromamine-T
- V.23. Preparation Of Substituted Α-Phenyl Ethanols
- V.24. Thermogravimetry
- VI. Summary And Outlook
- References