1. Organic
Chemistry Institute, Westfälische Wilhelms-Universität, Corrensstraße 40, 48149 Münster, Germany
2. Davenport
Research Laboratories, Department of Chemistry, University of Toronto, 80 St. George Street, Toronto, Ontario M5S 3H6 Canada
3. Brock University, St. Catharines, Ontario L2S 3A1, Canada
4. Department
of Chemistry, Lomonosov Moscow State University, 119899 Moscow, Russia