oa Editorial [Hot topic: Organophosphorus Chemistry (Guest Editor: Gyorgy Keglevich)]

After the publication of Organophosphorus (OP) special issues 1-6 of Current Organic Chemistry in recent years, this series may perhaps be regarded to be traditional. As the next step, the 7. OP special issue is announced here. Organophosphorus chemistry hides a lot of exciting fields in itself, such as syntheses, theoretical aspects, bioactivity and a broad spectrum of applicability. In this issue two articles are connected to the field of biologically active organophosphorus compounds. The first one explores the synthesis and therapeutic role of O-phosphotyrosine analogues, while the second one is on the synthesis and antidotal effects of pyridinium aldoximes used in the treatment of acetylcholine esterase organophosphate contamination. The next three papers comprises synthetic organic chemistry. Possible syntheses of alkenylphosphines that are useful building-blocks in the preparation of a variety of organophosphorus compounds are discussed. Heterocyclic chemistry is represented by tri- and pentavalent amidoesters and diamides that incorporate stereogenic phosphorus atom. Phosphorus dendrimers as such, express the presence of arts in organophosphorus chemistry. The species introduced are not only wonderful, but also can be used as sensors in analytical chemistry.