Established in 1960, Advances in Heterocyclic Chemistry is the definitive serial in the area--one of great importance to organic chemists, polymer chemists, and many biological scientists. Written by established authorities in the field, the comprehensive reviews combine descriptive chemistry and mechanistic insight and yield an understanding of how the chemistry drives the properties. Content: Front Cover; Advances in Heterocyclic Chemistry, Volume 72; Copyright Page; Contents; Contributos; Preface; Chapter 1. Five- and Six-Membered Heteroaromatic Compounds as u and IT Ligands; Chapter 2. Synthesis of Amino Derivatives of Five-Membered Heterocycles by Thorpe-Ziegler Cyclization; Chapter 3. 1,2,4,-Triazolo- and Tetrazolo[x, y-z]pyrimidines; Chapter 4. Chemistry of Pyrido[2,1-b][l,3]oxazines, Pyrido[2,1-b][1,3]thiazines, and Their Benzologs, Part IV; Chapter 5. Enamines as Synthons in the Synthesis of Heterocycles; Chapter 6. Fragmentations of Five-Membered Rings. Abstract: Established in 1960, Advances in Heterocyclic Chemistry is the definitive serial in the area--one of great importance to organic chemists, polymer chemists, and many biological scientists. Written by established authorities in the field, the comprehensive reviews combine descriptive chemistry and mechanistic insight and yield an understanding of how the chemistry drives the properties