1. Key Laboratory of Green Chemistry & Technology of Ministry of Education College of Chemistry Sichuan University 29 Wangjiang Road Chengdu 610064 P. R. China
2. The Center for Precision Synthesis Institute for Advanced Studies Wuhan University Wuhan 430072 P. R. China
3. College of Chemistry and Materials Science Sichuan Normal University Chengdu 610068 P. R. China
4. College of Chemistry and Chemical Engineering Neijiang Normal University Neijiang 641100 P. R. China
5. Beijing National Laboratory for Molecular Sciences Beijing 100190 P. R. China