1. Key Laboratory of Organofluorine Chemistry, Center for Excellence in Molecular Synthesis, Shanghai Institute of Organic Chemistry University of Chinese Academy of Sciences Chinese Academy of Sciences 345 Lingling Lu Shanghai 200032 P. R. China
2. Syngenta Jealott's Hill International Research Centre Bracknell RG42 6EY UK
3. Syngenta Japan K.K. 21F, Office Tower X, 1-8-10. Harumi, Chuo Tokyo 104-6021 Japan