As this book is gaining increasing popularity, therefore, I feel pleasure to present the fifth revised and enlarged edition of this book. In this edition some chapters have been rewritten and some new chapters have been added. These additions also cover UGC syllabus.

With the above additions, it is expected that this new edition will be more helpful to the readers. These additions will further make the students to probe deep into the subject.

Contents :

1. Introduction to Organic Reaction Mechanism
2. Concepts Used in Organic Reaction Mechanism
3. Tautomerism
4. Hydrogen Bonding
5. Stereochemistry
6. Free Radical Reactions
7. Addition Reaction (Unsaturation and Conjugation)
8. Elimination Reactions(Carbenes)
9. Reactions of the Carbonyl Group
10. Nucleophilic Substitution at Saturated Carbon
11. Aromatic Substitution
12. Esterfication, Ester Hydrolysis and Trans-Esterification and Hard and Soft Acids and Bases
13. Benzenoid and Non-Benzenoid Aromatic Compounds
14. Conformational Analysis
15. Some reactions of Synthetic Importance
16. Molecular Rearrangements
17. Some Reagents of Synthetic Importance