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Full Screen- TITLE
- CERTIFICATE
- DECLARATION
- ACKNOWLEDGEMENT
- CONTENTS
- Preface
- 1 Introduction
- l.1 Intramolecular Photochemical [2+2] Cycloaddition Reactions of Bis (cinnamoyl) Ketene Dithioacetals
- 1.2 Reactions of Bis (cinnamoyl) Ketene Dithioacetals with Dimsyl Sodium: Synthesis of Functionalized Thiopyrans
- 1.3 Reactions of ΒOxothioamides with 1, 2- Bielectrophiles: Synthesis of Functionalized Thiophenes
- 1.4 Reactions of α-Hydroxyketene Dithioacetals with Vilsmeier Reagents
- References
- 2 Studies on Crystal Structure and Conformation Assisted Photochemical Reactions of Bis (cinnamoyl) Ketene Dithioacetals
- 2.1 Introduction
- 2.1.1 Cinnamoyl Ketene Dithioacetals: Synthesis and Reactivity
- 2.1.2 Bis (cinnamoyl) Ketene Dithioacetals: Synthesis and Reactions
- 2.1.3 Photochemical [2+2] Cycloaddition Reactions
- 2.1.4 Photoreactions of Cinnamic Acid Derivatives
- 2.2 Results and Discussion
- 2.3 Experimental
- 2.3.1 Claisen-Schmidt Reaction of 3- (1, 3-Dithiolan-2-yliden) -2, 4-pentanedione.
- 2.3.2 Photochemical [2+2] Cycloaddition Reaction of Bis (cinnamoyl) Ketene Dithioacetals
- References
- 3 Fragmentation Reactions of Bis (cinnamoyl) Ketene Dithioacetals: Synthesis of Functionalized Thiopyrans
- 3.1 Introduction
- 3.1.1 Fragmentation Reactions: An Overview
- 3.1.2 Sodium Methylsulfenylmethylide: Applications in Organic Synthesis
- 3.1.3 Functionalized Thiopyrans: General methods of Synthesis
- 3.1.4 Sodium Methylsulfenylmethylide: Reactions with α-Oxoketene Dithioacetals
- 3.2 Results and Discussion
- 3.2.1 Reaction of (1E, 6E) -4- (l, 3-Dithiolan-2-yliden) -1, 7-diphenyl-1, 6-heptadiene 3, 5-dione with Dimsyl Sodium
- 3.2.2 Reactions of Cyclic Ketene Dithioacetals Containing a 1, 3-Dithiane Moiety with Dimsyl Sodium
- 3.3 Experimental
- 3.3.1 General Procedure for the Synthesis of 2-Aryl-5-[ (E) -3-phenyl-2 propenoyll-6- (vinylsulfanyl) -2, 3-dihydro-4H-thiopyran-4-ones
- 3.3.2 Preparation of 2-Phenyl-6- (vinyl sulfanyl) -2H-thiopyran
- 3.3.3 Reaction of 3- (1, 3-Dithian-2-yliden) -2, 4-pentanedione with Dimsyl Anion: Synthesis 1- (1, 3-dithian-2-yliden) acetone
- References
- 4 Synthesis of Functionalized Thiophenes from β- Oxothioamides
- 4.1 Introduction
- 4.1.1 β-Oxodithioesters: Synthesis
- 4.1.2 β-Oxodithioesters: Synthetic Applications
- 4.1.3 β-Oxothioamides: Synthesis and Reactions
- 4.1.4 Thioamides: Applications in the Synthesis of Functionalized Thiophenes
- 4.1.5 Functionalized Thiophenes: General Synthetic Methods
- 4.2 Results and Discussion
- 4.2.1 Reactions of Βoxothioamides with Phenyl Bromide
- 4.2.2 Reactions of Βoxothioamides with ethyl bromoacetate
- 4.3 Experimental
- 4.3.1 General procedure for the Synthesis of (2-Morpholino-4-phenyl-3 thienyl) (phenyl) methanones
- 4.3.2 General procedure for the synthesis of (2-morpholino-4-phenyl-3 thienyl) (phenyl) methanones
- 4.3.3 General Procedure for the Synthesis of Ethyl 3-phenyl-5-piperidino-2 thiophenecarboxylate
- References
- 5 Vilsmeier-Haack Reactions of α-Hydroxyketene Dithioacetals: Synthesis of Substituted Pentadienethioates
- 5.1 Introduction
- 5.1.1 Carbonyl Group Transpositions: Applications in Organic Synthesis
- 5.1.2 1, 3-Carbonyl Group Transpositions: General Strategies
- 5.1.3 Chloromethyleneiminium Salts: Preparation and Synthetic Applications
- 5.1.4 α-Hydroxyketene Dithioacetals: Synthetic Uses
- 5.2 Results and Discussion
- 5.2.1 Reactions of 4, 4-Bis (methylsulfanyl) -2-phenyl-3-buten-2-ol with Chloromethyleneiminium Salts: Synthesis of Substituted 3-Aryl-5 methylsulfanyl-2, 4-pentadienethioates
- 5.2.2 Reactions of 1- (1, 3-Dithiolan-2-yliden) -: 2-phenyl-2-propanols with Chloromethyleneiminium Salts
- 5.3 Experimental
- 5.3.1 General Procedure for the Synthesis of 3-Aryl pentadienethioates
- 5.3.2 General Procedure for the Synthesis of 4- (1, 3-Dithiolan-2-yliden) 3-aryl-2-butenal
- References