Comprehensive Heterocyclic Chemistry IV provides a first point of entry for scientists interested in heterocyclic ring systems. Given the rapid expansion of publications in this field, this compilation of definitive reviews is especially important and invaluable. Written by leading scientists who have evaluated and summarized the most important data published over the last decade, this book is an invaluable addition to the reference library of anyone working with heterocyclic ring systems. Spanning 14 volumes, over 13,000 pages, and 240 chapters, this new edition builds on, and complements, the material in previous editions. This comprehensive resource is designed to be used both as a standalone resource and in conjunction with earlier works.