Synthesis, Crystal Analyses, and Chiroptical Properties of Coumarin-Containing Helicenes.

Org Lett

College of Chemistry and Materials Science, Key Laboratory of Chemical Biology of Hebei Province, Hebei University, Baoding, Hebei 071002, P. R. China.

Published: September 2025


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Article Abstract

Four novel coumarin-containing arenes bearing a [5]/[6]helicene unit (, , , and ) have been readily synthesized and structurally verified by X-ray crystallographic analysis. The chiral resolution of molecules , , and has enabled a detailed investigation of their chiroptical properties and the kinetics of enantiomerization, manifesting that the [6]helicenes and exhibit a more enhanced chiroptical response compared to [5]helicene .

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http://dx.doi.org/10.1021/acs.orglett.5c03046DOI Listing

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