Stereoisomerism and Structures of Rigid Cylindrical Cycloarylenes

Stereoisomerism is one of the most fundamental and indispensable notions in chemistry. We have recently found that a novel form of stereoisomerism emerges in cycloarylenes, cyclic arrays of aromatic panels. Structural rigidity that is a precondition for chirality has been realized in an unconventional manner with the cyclic structures, which gives rise to unique cyclostereoisomerism affording diastereomers and enantiomers. In this account, structural chemistry of cylindrical cycloarylenes synthesized in our group will be reviewed with an emphasis on stereochemistry. The relevant studies in this new field will deepen our understanding of the fundamental structural chemistry of finite single-wall carbon nanotube molecules.

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