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Peng Wu, Alina K. Feldman, Anne K. Nugent, Craig J. Hawker,*Arnulf Scheel, Brigitte Voit, Jeffrey Pyun, Jean M. J. Fr$chet,K. Barry Sharpless,* and Valery V. Fokin*

Structural diversity is possible in dendrimer syntheses based on the highly efficientconstruction of triazoles from functionalized azides and alkynes. In theirCommunication on page 3928 ff., V. V. Fokin et al. describe the application of thisCuI-catalyzed transformation, which proceeds in near-quantitative yields even to thethird and fourth generation.