Frontispiece: Divergent Synthesis of Sulfur-Containing Bridged Cyclobutanes by Lewis Acid Catalyzed Formal Cycloadditions of Pyridinium 1,4-Zwitterionic Thiolates and Bicyclobutanes

Yuanjiu Xiao

• orcid.org/0000-0001-5155-9099

State Key Laboratory of Chemo/Biosensing and Chemometrics, Advanced Catalytic Engineering Research Center of the Ministry of Education, College of Chemistry and Chemical Engineering, Hunan University, Changsha, Hunan, 410082 P. R. China

Feng Wu

• orcid.org/0000-0003-1918-1596

State Key Laboratory of Chemo/Biosensing and Chemometrics, Advanced Catalytic Engineering Research Center of the Ministry of Education, College of Chemistry and Chemical Engineering, Hunan University, Changsha, Hunan, 410082 P. R. China

Lei Tang

• orcid.org/0000-0003-1273-9040

State Key Laboratory of Chemo/Biosensing and Chemometrics, Advanced Catalytic Engineering Research Center of the Ministry of Education, College of Chemistry and Chemical Engineering, Hunan University, Changsha, Hunan, 410082 P. R. China

Dr. Xu Zhang

• orcid.org/0000-0003-0799-5816

School of Chemistry & Chemical Engineering, Yangzhou University, Yangzhou, 225002 P.R. China

Mengran Wei

Institute of Theoretical and Computational Chemistry, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing, 210093 P. R. China

Corresponding Author

Prof. Dr. Guoqiang Wang

• [email protected]

• orcid.org/0000-0001-9666-1919

Institute of Theoretical and Computational Chemistry, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing, 210093 P. R. China

Corresponding Author

Prof. Dr. Jian-Jun Feng

• [email protected]

• orcid.org/0000-0002-6094-3268

State Key Laboratory of Chemo/Biosensing and Chemometrics, Advanced Catalytic Engineering Research Center of the Ministry of Education, College of Chemistry and Chemical Engineering, Hunan University, Changsha, Hunan, 410082 P. R. China