Pore it on: Huisgen 1,3-dipolar cycloaddition reactions of 2-(azidomethyl)triphenylene and alkynes (see scheme) took place within the pores of a porous coordination network in a single-crystal-to-single-crystal fashion. Columnar π stacks and nanosized pores in the network complex enforce a particular orientation of the reactants such that the 1,4-substituted isomer of the 1,2,3-triazole product is selectively produced.
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Kawamichi et al. (2010) studied this question.
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