The front cover picture, provided by Bo Wang, Xinyan Wang, and Yuefei Hu, illustrates the characteristics of 1-copper(I)-2-phenylethyne in its preparation, properties and structure. By using its polymeric structure, the tandem reaction sequence of 1-Cu(I)-alkyne with an azide (cycloaddition) and then an electrophile E+ (electrophilic substitution) can be controlled efficiently. Thus, a general method for the synthesis of 1,4,5-trisubstituted 1,2,3-triazoles was developed by simply stirring the mixture of a 1-copper(I)-alkyne, an azide and an electroplile E+. Details can be found in the full paper on pages 401–407 (B. Wang, N. Liu, W. Chen, D. Huang, X. Wang, Y. Hu, Adv. Synth. Catal. 2015, 357, 401–407; DOI: 10.1002/adsc.201400471).