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TITLE
DEDICATION
CERTIFICATE
DECLARATION
ACKNOWLEDGEMENT
CONTENTS
1 INTRODUCTION
1.1 α-Oxoketene-S, N-acetals
1.2 β-Enaminothioketones
1.3 β-Oxodithiocarboxylates
1.4 Reactions of α-oxoketene-S, N-acetals with Lawessons Reagent
1.5 Reaction of α-Oxoketene-S, N-acetal with Vilsmeier-Haack Reagent
1.6 Synthesis of β-Oxodithiocarboxylates
1.7 Reactions of Functionalized β-Oxodithioesters with Phenacyl Bromide
1.8 Reactions of Functionalized β-Oxodithioesters with Bromoacetone
1.9 Reaction of Functionalized β-Enaminothioketones with Phenacyl Bromide
1.10 Reaction of Functionalized β-Enaminothioketones with Methyl Iodide
1.11 Conclusions
1.12 References
2 α-OXOKETENE-S, N-ACETALS AND β-ENAMINOTHIOKETONES: SYNTHESIS AND REACTIVITY
2.1 Introduction
2.2 α-Oxoketene-S, N-acetals
2.2.1 α-Oxoketene-S, N-acetals: Synthesis
2.2.2 α-Oxoketene-S, N-acetals: Reactivity
2.3 β-Enaminothioketones
2.3.I β-Enaminothioketones: Synthesis
2. 3.2 β-Enaminothioketones: Reactivity
2.4 References
3 REACTIONS OF αOXOKETENE-S, N-ACETALS WITH LA WESSONS REAGENT AND VILSMEIER HAACK REAGENT
3.1 Introduction
3.2 Reactions of α-Oxoketene-S, N-acetals with Lawessons reagent
3.3 Results and Discussion
3.4 Reaction of α-oxoketene-S, N-acetal with Vilsmeier Haack Reagent
3.6 Conclusions
3.7 Experimental
3.7.1 Preparation of α-Oxoketene-S, N-acetals: General Procedure
3.7.2 Reaction of 3-methylthio-3-anilino-I-aryl propenones with Lawessons reagent: General Procedure
3.7.3 Reaction of α-Oxoketene-S, N-acetals with Vilsmeier-Haack reagent: General Procedure
3.8 References
4 REACTIONS OF FUNCTIONALIZED βOXODITHIOESTERS WITH α-HALOKETONES: SYNTHESIS OF FUNCTIONALIZED THIOPHENES
4.1 Introduction
4.1.1 β-Oxodithioesters: Synthesis
4. 1.2 β-Oxodithioesters: Reactivity
4.2. Results and Discussion
4.2.1 Reaction of Functionalized β-Oxodithioesters with Phenacyl bromide
4.2.2 Reaction of Functionalized β-Oxodithioesters with Bromoacetone
4.2.3 Conclusions
4.3 Experimental
4.3.1 Preparation of β-Oxodithioesters: General Procedure
4.3.2 Reactions of Aroyldithioacetates with α-Haloketones: General Procedure
4.4 References
5 REACTION OF β-ENAMINOTHIOKETONES WITH ALKYLHALIDES AND α-HALOKETONES: SYNTHESIS OF THIOLESTERS AND FUNCTIONALIZED AMINOTHIOPHENES
5.1 Introduction
5.2 Thiolesters from ketene dithioacetals and dithioesters
5.3 General Methods for the Preparation of Functionalized Atninothiophenes
5.4 Results and Discussion
5.4.1 Reaction of β-Enaminothioketones with Methyl iodide: Formation of 3-Aryl-1, 3-bis (methylthio) prop-2-ene-I-ones
5.4.2 Reaction of β-Enaminothioketones with α-Haloketones: Formation of 2-Benzoyl-3-phenylamino-5-phenylthiophene
5.5 Conclusions
5.6 Experimental
5.6.1 General Procedure for the Preparation of 3-aryl-1, 3-bis (methylthio) prop-2-ene-l-ones
5.6.2 General procedure for the preparation of 2-Aroyl-3-phenyl amino-5 phenyl thiophenes and 2-aroyl-3 methylamino-5 phenylthiophenes
5.7 References