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- W3022144471 endingPage "12588" @default.
- W3022144471 startingPage "12579" @default.
- W3022144471 abstract "The enantioselective synthesis of polycyclic aromatic hydrocarbon (PAH)-based planar chiral cyclophanes was achieved for the first time by the rhodium-catalyzed intramolecular regio- and enantioselective [2+2+2] cycloaddition of tethered diyne-benzofulvenes followed by stepwise oxidative transformations. The thus synthesized planar chiral bent cyclophanes, that possess bent p-terphenyl- and 9-fluorenone-cores, were converted to 9-fluorenol-based ones with excellent ee values of >99 % by diastereoselective 1,2-reduction. These 9-fluorenol-based cyclophanes exhibited high fluorescence quantum yields, which were significantly higher than that of an acyclic reference molecule (78-82 % vs. 48 %). The bending effect on the chiroptical property was also examined, which revealed that the anisotropy factors (gabs values) for electronic circular dichroism (ECD) of these 9-fluorenol-based planar chiral bent cyclophanes increase as the tether length becomes shorter." @default.
- W3022144471 created "2020-05-13" @default.
- W3022144471 creator A5013437976 @default.
- W3022144471 creator A5023335062 @default.
- W3022144471 creator A5025246463 @default.
- W3022144471 creator A5047402667 @default.
- W3022144471 creator A5086800033 @default.
- W3022144471 date "2020-09-17" @default.
- W3022144471 modified "2023-10-14" @default.
- W3022144471 title "Enantioselective Synthesis of Polycyclic Aromatic Hydrocarbon (PAH)‐Based Planar Chiral Bent Cyclophanes by Rhodium‐Catalyzed [2+2+2] Cycloaddition" @default.
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