The cover picture shows the concept of the enantioselective thia-Diels–Alder reaction with aryl and hetaryl thioketones as dienophiles proceeding according to the trienamine activation model described in the manuscript. The ant shown in the picture symbolizes the aminocatalyst that does the hard work in the catalytic cycle, being responsible for the formation of the crucial trienamine intermediate and efficient chirality transfer. The artwork is by Sandra Bednarska and Jan Bojanowski. Details are discussed in the Communication by Ł. Albrecht et al. on page 950 ff (DOI: joc.201601307/abstract" title="Link to external resource: http://onlinelibrary.wiley.com/doi/10.1002/ejoc.201601307/abstract" target="_blank">10.1002/ejoc.201601307).