A heterocyclic compound or ring structure is a cyclic compound that has atoms of at least two different elements as members of its ring(s). Heterocyclic chemistry is the branch of organic chemistry dealing with the synthesis, properties, and applications of these heterocycles. This text is a concise book that gives details of heterocyclic compounds. This book will also be useful to the students preparing for various competitive examinations. Much emphasis has been placed on chemical reactions and mechanisms of heterocyclic compounds. Each compound had been described in a clear and systematic manner. The subject-matter presented in each book, though concise, has adequate coverage of this subject; the important points wherever necessary have been highlighted; complex portion of the content has been interpreted in an easy to grasp manner; and long sequences of references of reactions have been summarized in short run flowcharts.

This book presents the abstracts of the 19th International Congress of Heterocyclic Chemistry (19th ICHC) held in Fort Collins, Colorado, 10-15th August 2003 and provides the reader with a topical comprehensive reference source covering the latest developments in the heterocycles area. Each lecture from the 19th ICHC is presented as a one page abstract containing a textual summary of the lecture, including references, figures and contact details of the author(s). Papers are divided into the following sections: heterocyclic natural products, heterocycles in organic synthesis, bioactive heterocycles, heterocyclic materials &related topics, heterocyclic pharmaceuticals. The book of abstracts provides a topical reference source covering the latest developments in the heterocyles area.

N-Sulfonated-N-Heterocycles covers the synthesis, chemistry and biological applications of these compounds, focusing on pioneering synthetic approaches, mechanistic insights and their limitations, as well as recent advances in this field. The synthesis of some of N-sulfonated N-heterocycles and their transformation to other useful cyclic and acyclic compounds are discussed, as well as their uses as useful intermediates in the preparation of polymeric and medicinal materials. This book includes detailed methods and protocols, and the focus on applications makes this resource an essential guide for all researchers in the area of organic, medicinal and polymeric synthetic study. Reviews the use of N-sulfonated N-heterocycles as important precursors for the synthesis of biologically active compounds Includes information on synthetically useful transformations of N-sulfonated N-heterocycles Covers a wide synthetic methods used for an important branch of heterocycles and their biological evaluation in detail Features over 500 schemes to illustrate different synthetic pathways and reactions of N-sulfonated N-heterocycles

The research comprehensive in this book communicates the “Synthesis of Novel Heterocyclic Compounds And Their Characterization”. The wide-ranging introduction aims to convey and put into outlook the significance of biologically active compounds especially heterocycles bearing isoindoline-1,3-dione (phthalimide) and imidazole gallows chemistry. The class of N-Heterocycles have received significant importance in past ten decades and synthesis of new molecules with this class is yet unended. These heterocycles are key components to functional molecules that are utilized in a diverse range of applications. An emphasis has been placed on the antiquity, structure, properties, synthesis, preponderance of diverse range of applications and recent advances in the synthesis, of the imidazole and isoindoline-1,3-dione bearing heterocycles.