1. Research Center for Molecular Recognition and Synthesis
2. Department of Chemistry
3. Fudan University
4. Shanghai 200433
5. P. R. China
6. Shanghai Key Laboratory of Green Chemistry and Chemical Process
7. College of Chemistry and Molecular Engineering
8. East China Normal University
9. Shanghai
10. 200062
11. Zhengzhou University
12. Zhengzhou 450001
13. China