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Partially Hydrogenated 7-Oxa[5]helicenes and [5]Helicenes: Synthesis, Structures, and Dynamics

โœ Scribed by Atul Goel; Deepti Verma; Ramendra Pratap; Gaurav Taneja; Yasmin Hemberger; Michael Knauer; Resmi Raghunandan; Prakas Ranjan Maulik; Vishnu Ji Ram; Gerhard Bringmann

Publisher
John Wiley and Sons
Year
2011
Tongue
English
Weight
585 KB
Volume
2011
Category
Article
ISSN
1434-193X

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## Abstract **The cover picture shows** the structure of 5โ€aza[5]helicene (top) and the crystal packing (single enatiomers, bottom). This is one of the aza[5]helicenes reported in the paper that were synthesized by photochemical ring closure of suitable ethenyl derivatives. The photophysical proper