Claudio Santi received the PhD in Chemical Sciences from the University of Perugia under the supervision of Prof. Marcello Tiecco. Currently he is professor of Organic Chemistry and teaches the courses of Spectroscopy for Organic Chemistry and Organic Chemistry of Natural Compounds. He leads the group of Catalysis and Organic Green Chemistry in the department of Pharmaceutical Sciences and is worldwide recognized expert n organoselenium chemistry. His research interest range from the application of selenium reagents in green chemistry to the development of new orgaselenium containing drugs. He is author of more than 130 publications including review articles and book chapters.