Shape persistent hybrid dendrimers from benzene and triazole via ‘click chemistry’

Fully aromatic rigid dendrimers have been synthesized at room temperature based on two different ‘click’-reactions: The dendronization was carried out via the copper catalyzed azide–alkyne Huisgen cycloaddition or Diels–Alder cycloaddition, respectively. The feasible combination of both reactions leads to dendrimer hybrids. Stiff aromatic dendrimers, whose highly nitrogen containing scaffolds are solely based on interconnected benzene and triazole rings, were created.