1. Roy
and Diana Vagelos Laboratories, Penn/Merck Laboratory for High-Throughput
Experimentation, Department of Chemistry, University of Pennsylvania, 231 South 34th Street, Philadelphia, Pennsylvania 19104-6323, United States
2. Institute
of Advanced Synthesis, School of Chemistry and Molecular
Engineering, Jiangsu National Synergetic Innovation Center for Advanced Materials, Nanjing Tech University, 30 South Puzhu Road, Nanjing, 211816, P. R. China
3. Department of Process Research & Development, Merck & Company, Incorporated, P.O. Box 2000, Kenilworth, New Jersey 07065, United States