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. 2021 Jun 7;57(45):5566-5569.
doi: 10.1039/d1cc01631h. Epub 2021 May 10.

X-shaped thiadiazole-containing double [7]heterohelicene with strong chiroptical response and π-stacked homochiral assembly

Juan Hong  1 , Xuxian Xiao, Haoliang Liu, Lin Fu, Xin-Chang Wang, Long Zhou, Xiao-Ye Wang, Zijie Qiu, Xiao-Yu Cao, Akimitsu Narita, Klaus Müllen, Yunbin Hu
Affiliations

X-shaped thiadiazole-containing double [7]heterohelicene with strong chiroptical response and π-stacked homochiral assembly

Juan Hong et al. Chem Commun (Camb). .

Abstract

An X-shaped double [7]heterohelicene 1 bearing four thiadiazole units is synthesized by regioselective cyclodehydrogenation. Enantiopure 1 exhibits excellent chiroptical properties with an impressive absorption dissymmetry factor of up to 0.027, as well as a compact π-stacked homochiral assembly which is unprecedented in the realm of double helicenes.

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