S1 Organocatalytic Asymmetric Remote Aziridination of 2,4-Dienals Kim Søholm Halskov, Tricia Naicker, Magnus E. Jensen and Karl Anker Jørgensen* [*] Center for Catalysis Department of Chemistry, Aarhus University DK-8000 Aarhus C, Denmark Fax (45) 8715 5956, e-mail: kaj@chem.au.dk Contents 1. General methods S2 2. Synthesis of starting materials S3 3. General procedure for the organocatalytic reactions S5 3.1 Organocatalytic asymmetric remote aziridinaton of 2,4-dienals S5 3.2 NHC-Catalyzed allylic aziridine ring-opening S8 3.3 Oxazolidinone formation S8 3.4 Organocatalytic asymmetric 1,6-addition of thiols S9 4. Assignment of absolute configuration by NMR analysis S11 5. NMR spectra of novel compounds S17 6. UPC 2 traces S39 Electronic Supplementary Material (ESI) for Chemical Communications This journal is © The Royal Society of Chemistry 2013