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 Road, Shanghai 200032, P. R. China
2. Bayer AG, Research & Development, Pharmaceuticals, 178 Müllerstraße, Berlin 13342, Germany
3. Open Innovation Center China, Bayer Center, Bayer Pharmaceuticals, Bei Dong San Han 27, Beijing 100020, P. R. China
4. Centre for Green Chemistry and Department of Chemistry, University of Massachusetts Boston, 100 Morrissey Boulevard, Boston, Massachusetts 02125, United States