Book excerpt: Organochalcogen compounds reviews the state of the art in new green protocols involving organochalcogen compounds (Se, S, and Te), including the use of nonconventional reaction media, alternative solvents, and solvent-free protocols to prepare these important compounds. Bringing together several leading researchers in organochalcogen chemistry, it provides an authoritative overview of the current state of the field and compiles recent advances in methodologies for the application of green chemistry principles in compound development. These include the use of organochalcogen compounds as intermediates, catalysts, or target products across a range of applications. The recent developments outlined in in the book reflect the efforts of the researchers in this area to move toward a more sustainable chemistry, giving the book the dual benefit of highlighting the latest developments in the field while also showing how the principles of green chemistry can effectively be included in active research projects. Thus it is a valuable reference for chemists, particularly those working in organic, green, and synthetic chemistry across both academia and industry. Highlights green synthetic methods with potential application in the synthesis of natural compounds or other biologically active scaffolds Explores the chemical modification of natural compounds by insertion of organochalcogen groups for the preparation of boosted bioactive semisynthetic molecules Discuss how redox catalysis and catalysis in flow conditions using eco-friendly oxidant can provide new opportunities for the synthesis of linear ad cyclic derivatives