[Inhoudsopgave]: Chromenes, Chromanones, and Chromones Introduction (G. P. Ellis). 2H and 4H 1 Benzopyrans (E. E. Schweizer and Deborah Meeder Nycz). 3 and 4 Chromanols (I. M. Lockhart). 3 Chromanones (I. M. Lockhart). 4 Chromanones (I. M. Lockhart). 2,4 Chromandiones and 2,3,4 Chromantriones (I. M. Lockhart). Naturally Occurring Chromones (G. P. Ellis). Analytical Aspects of Chromones (G. P. Ellis). General Methods of Preparing Chromones (G. P. Ellis). Chromone and Its Benzo Derivatives (G. P. Ellis). Alkylchromones (G. P. Ellis). Hydroxychromones (G. P. Ellis). Alkoxychromones (G. P. Ellis). Halochromones (G. P. Ellis). Nitrochromones (G. P. Ellis). Aminochromones (G. P. Ellis). Ketonic Chromones (G. P. Ellis). Chromone Carbonitriles and Tetrazole Derivates (G. P. Ellis). Chromone Carboxaldehydes (G. P. Ellis). Chromone Carboxylic Acids and Their Derivatives (G. P. Ellis). Bischromones and Bichromones (G. P. Ellis).