1. ELTE “Lendület” Catalysis and Organic Synthesis Research GroupInstitute of ChemistryEötvös UniversityFaculty of Science Pázmány Péter stny. 1/A 1117 Budapest Hungary
2. Current address: Max Planck Institut für Kohlenforschung Kaiser-Wilhelm-Platz 2 45470 Mülheim an der Ruhr Germany
3. Theoretical Chemistry Research GroupInstitute of Organic ChemistryResearch Centre for Natural Sciences Magyar tudósok körútja 2. Budapest Hungary