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: Cover; Advances in Heterocyclic Chemistry; Contents; Contributors; Preface; 5,6-Dihydroxyindoles and Indole-5,6-diones; Introduction; 5,6-Dihydroxyindoles; 2,3-Dihydro-5,6-dihydroxyindoles (5,6-Dihydroxyindolines); 2,3-Dihydro-1H-indole-5,6-diones (Aminochromes); Indole-5,6-diones; Biological Perspectives and the Problem of Melanin Structure; References; Syntheses, Structures and Interactions of Heterocalixarenes; Introduction; Calix[n]furans and their Hybrid Systems; Calix[n]thiophenes; Calix[n]pyridines and Related Systems; Triazine-Based Heterocalixarenes 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