Established in 1960, Advances in Heterocyclic Chemistry is the definitive serial in the areaone 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; Copyright Page; Contents; Contributors; Preface; Chapter 1. Organometallic Complexes of Boron, Silicon, and Phosphorus Analogues of Azoles; Chapter 2. Heterocyclic Mesomeric Betaines and Analogs in Natural Product Chemistry. Betainic Alkaloids and Nucleobases; Chapter 3. Recent Development in the Chemistry of Pyrido-oxazines, Pyrido-thiazines, Pyrido-diazines and Their Benzologs. Part 2; Cumulative Index of Authors, Volumes 1-85; Cumulative Index of Titles, Volumes 1-85; Cumulative Subject Index, Volumes 81-85. Abstract: Established in 1960, Advances in Heterocyclic Chemistry is the definitive serial in the areaone 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