Introduction of Nitrogen Atoms in [<i>n</i>]Cyclo-<i>meta</i>-phenylenes via Cross-coupling Macrocyclization
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Multiple nitrogen atoms were introduced in macrocyclic structures of [<i>n</i>]cyclo-<i>meta</i>-phenylene via a concise one-pot cross coupling between pyridylene and phenylene units. Five congeners of <i>n</i> = 6, 8, 10, 12, and 14 were isolated, and their structures were fully characterized in the crystalline solid state to reveal a variety of macrocyclic structures. The solution-phase analyses showed the presence of flexible macrocyclic structures.
- Chemistry Letters
Chemistry Letters 45(6), 676-678, 2016
The Chemical Society of Japan