Fig. 1: Synthetic strategy for axially chiral carbazoles. | Nature Communications

Fig. 1: Synthetic strategy for axially chiral carbazoles.

From: Enantiotopic-group-selective coupling for unified access to carbazole atropisomers as versatile chiral chromophores

Fig. 1

A Atropisomerism of N-aryl carbazoles and its applications. B Conventional steric biasing does not confer long-range stereochemical relay. C Huang, Wong & Yeung’s work on organocatalytic desymmetrization to 1-bromo N-aryl carbazoles. D This work: Catalytic remote desymmetrization offers modular access to carbazole atropisomers for chiroptical functions. Ar aryl, Bu butyl, CD circular dichroism, CPA chiral phosphoric acid, CPL circularly polarized luminescence, CT charge transfer, TADF thermally activated delayed fluorescence.

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