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Updated: Mar 16, 2026

Preparation of a Corannulene-functionalized Hexahelicene by CopperI-catalyzed Alkyne-azide Cycloaddition of Nonplanar Polyaromatic Units
Published on: September 18, 2016
Corannulene-Helicene Hybrids: Chiral π-Systems Comprising Both Bowl and Helical Motifs
Takao Fujikawa1, Dorin V Preda2, Yasutomo Segawa1,3
1Graduate School of Science, Nagoya University , Chikusa, Nagoya 464-8602, Japan.
Abstract:
Two distinct structural elements that render π-systems nonplanar, i.e., geodesic curvature and helical motifs, have been combined into new polyarenes that contain both features. The resultant corannulene-[n]helicenes (n = 5, 6) show unique molecular dynamics in their enantiomerization processes, including inversion motions of both the bowl and the helix. Optical resolution of a corannulene-based skeletally chiral molecule was also achieved for the first time, and the influence of the bowl-motif annulation on the chiroptical properties was investigated.
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