We report an alternative method for the convergent1 synthesis of dendrimers in which the dendrimer core is generated from a dendritic precursor by an alkyne cyclotrimerization reaction. 2 In this method, convergent dendrons1, 3 attached to an acetylenic moiety are cyclized in a [2+ 2+ 2] cycloaddition process. The cycloaddition can be mediated by various transition-metal complexes and exhibits a high degree of chemoselectivity toward triple ...
