Front Cover: Chem. Eur. J. 40/2019)

Abstract Synthesis through Organometallics: This Special Issue is in honor of the 20th IUPAC International Symposium on Organometallic Chemistry directed towards Organic Synthesis (OMCOS 20), which will be held in Heidelberg, Germany, on July 21–25, 2019. Contributions include Review-type and Research articles (Full Papers and Communications) from speakers of the OMCOS symposium (past and present) as well as members of the OMCOS board. Cover design by Joseph Unsay, who also thanks Philipp Werther for access to lab equipment.