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. Every fifth volume of Advances in Heterocyclic Chemistry contains a cumulative subject index. Content: Front Cover; Advances in Hetrocyclic Chemistry, Volume 63; Copyright Page; Contents; Contributors; Preface; Chapter 1. Six-Membered Heterocycles with a Tellurium Atom; Chapter 2. Annelated 1,5-Benzothiazepines; Chapter 3. Recent Developments in the Chemistry of Pyrido[1,2-a]pyrimidines; Chapter 4. The Chemistry of Heterocyclic Hydrazonoyl Halides; Chapter 5. Cycloaddition Reactions with Vinyl Heterocycles. 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. Every fifth volume of Advances in Heterocyclic Chemistry contains a cumulative subject index