The front cover picture, provided by Jun‐Fa Wei et al., shows the instance of two aromatic double bonds and an imine double bond involved in a thermal 6π‐azaelectrocyclization, leading to triazacoronenes (TACs) under non‐acidic conditions. This method provides an effective complement to the previous methods and, meanwhile, represents a new synthesis tool for the TACs family. The picture depicts the synergetic cyclization process of π electrons to yield the products. Further details of this work can be found in the communication on pages 1651–1656 (Y.‐X. Sun, X.‐G. Wang, G.‐D. Shen, T. Yang, Y.‐H. Yang, J. Li, M.‐Y. Yang, H.‐M. Sun, J.‐F. Wei, Adv. Synth. Catal. 2020, 362, 1651–1656; DOI:10.1002/adsc.201901433).
原文链接
http://onlinelibrary-wiley-com-443.webvpn.fjmu.edu.cn/doi/10.1002/adsc.202000367