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Helicenes: the familly gets bigger

Helicenes are synthetic molecules with attractive properties for material physicists expert in materials but also for biologists. A collaboration led by chemists from the SCBM (CEA-Joliot) and involving the NIMBE (CEA-Iramis) allowed the synthesis of a particular class of helicenes.

Published on 22 January 2019

Abstract from the original paper

​The first approach to pyrazole-containing helicenes via sydnone-aryne [3+2]-cycloaddition is described. An unprecedented regioselectivity in the cycloaddition step toward the more sterically constrained product was observed in the presence of extended aromatic scaffolds. DFT calculations enabled understanding the origin of this unexpected selectivity. 
© D. Audisio/CEA

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