CC BY-ND-NC 4.0 · Synlett 2019; 30(04): 370-377
DOI: 10.1055/s-0037-1610283
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Symmetric Multiple Carbohelicenes

Kenta Kato
a   Graduate School of Science, Nagoya University, Chikusa, Nagoya 464-8602, Japan   Email: ysegawa@nagoya-u.jp
,
Yasutomo Segawa*
a   Graduate School of Science, Nagoya University, Chikusa, Nagoya 464-8602, Japan   Email: ysegawa@nagoya-u.jp
b   JST-ERATO, Itami Molecular Nanocarbon Project, Chikusa, Nagoya 464-8602, Japan   Email: itami@chem.nagoya-u.ac.jp
,
Kenichiro Itami*
a   Graduate School of Science, Nagoya University, Chikusa, Nagoya 464-8602, Japan   Email: ysegawa@nagoya-u.jp
b   JST-ERATO, Itami Molecular Nanocarbon Project, Chikusa, Nagoya 464-8602, Japan   Email: itami@chem.nagoya-u.ac.jp
c   Institute of Transformative Bio-Molecules (WPI-ITbM), Nagoya University, Chikusa, Nagoya 464-8602, Japan
› Author Affiliations
This work was supported by the ERATO program from JST (JPMJER1302 to K.I.), the Funding Program for KAKENHI from MEXT (JP16K05771 to Y.S.), a grant-in-aid for Scientific Research on Innovative Areas ‘π-Figuration’ from JSPS (JP17H05149 to Y.S.), and the Noguchi Institute (to Y.S.). K.K. thanks IGER Program in Green Natural Sciences, Nagoya University and a JSPS fellowship for young scientists. Calculations were performed using the resources of the Research Center for Computational Science, Okazaki, Japan. ITbM is supported by the World Premier International Research Center Initiative (WPI), Japan.
Further Information

Publication History

Received: 21 July 2018

Accepted after revision: 24 August 2018

Publication Date:
26 September 2018 (online)


Abstract

This account focuses on the synthesis and structures of symmetric multiple carbohelicenes; i.e., fully fused polycyclic aromatic hydrocarbons containing two or more symmetric helicene moieties. Synergies of the multiplexed helicene structures within a π-system generate a number of local minima and transition states between each state. Based on recent studies on multiple helicenes, a systematic molecular design for further multiplexed symmetric helicenes is proposed in the last section of this article.