Renaud Zelli, Stefano Tommasone, Pascal Dumy, Alberto Marra and Alessandro Dondoni
The cover picture shows a stamp celebrating the 100th anniversary of the 1906 Nobel prize, won by the French chemist Henri Moissan for the isolation of fluorine. After its discovery, the fluorine atom became part of many organic reagents, and fluorination played a key role in organic synthesis, drug design, and polymeric-material production. Recently, Sharpless and co-workers highlighted sulfonyl fluorides as potential click reagents owing to their easy preparation and purification, high stability under basic conditions, and good reactivity towards C-, O-, and N-nucleophiles (see Angew. Chem. Int. Ed. 2014, 126, 9620). In this context, stable sulfonyl fluorides featuring sugar, iminosugar, and calixarene moieties have been prepared and reacted with amines under metal-free conditions to give monovalent and multivalent sulfonamide derivatives. Details are discussed in the article by A. Marra, A. Dondoni et al. on p. 5102 ff.