Jiří Klívar
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Vybrané publikace
Asymmetric Synthesis of Diastereo- and Enantiopure Bioxahelicene 2,2
European Journal of Organic Chemistry 2018 (37): 5164-5178
A versatile asymmetric synthesis of five C2 symmetric enantio‐ and diastereopure bioxa[5]‐ and bioxa[6]helicene 2,2′‐bipyridines was developed. It relied either on a double intramolecular [2+2+2] cycloisomerization of dicyanotetrayne (forming simultaneously the 2,2′‐bipyridine unit and biazaoxahelicene backbone) or one‐pot/sequential intramolecular [2+2+2] cycloisomerization of triyne accompanied by an intermolecular haloazaoxahelicene reductive homocoupling. We reached an effective central‐to‐helical‐to‐axial chirality transfer that was controlled by the 1,3‐allylic‐type strain and sterically constricted atropoisomerization of the embedded 2,2′‐bipyridine unit. The chiroptical properties of the bioxahelicene 2,2′‐bipyridines were studied along with their fluorescence properties.
Nejnovější publikace
Photogeneration and Visualization of a Surface-Stabilized Dinitrene
Angewandte Chemie International Edition 64 (20): e202502640 (2025)
On-Surface Synthesis of Helicene Oligomers
Chemistry - A European Journal 30 (32): e202304127 (2024)
Nonaqueous capillary electrophoresis and quantum chemical calculations applied to investigation of acid–base and electromigration properties of azahelicenes
Electrophoresis 43 (5-6): 696–707 (2022)
On‐Surface Synthesis of Polyferrocenylene and its Single‐Chain Conformational and Electrical Transport Properties
Advanced Functional Materials 31 (5): 2006391 (2021)