1. Department of Chemistry and FRQNT Centre for Green Chemistry and Catalysis; McGill University; 801 Sherbrooke St. W. Montreal Quebec H3A 0B8 Canada
2. Ministry of Education Key Laboratory of Combinatorial Biosynthesis and Drug Discovery; Hubei Provincial Engineering and Technology Research Center for Fluorinated Pharmaceuticals; School of Pharmaceutical Sciences; Wuhan University; Wuhan 430071 China