New, optically active ligands derived from imidazole were tested in the cyclopropanation reaction of styrene using ethyl diazoacetate and copper(I) triflate as a catalyst. DOI: https://doi.org/10.2174/157017812800221735 Posted at the Zurich Open Repository and Archive, University of Zurich ZORA URL: https://doi.org/10.5167/uzh-61481 Accepted Version Originally published at: Mloston, G; Mucha, P...