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8571583 
Journal Article 
Shape-persistent chiral alleno-acetylenic macrocycles and cyclophanes by acetylenic scaffolding with 1,3-diethynylallenes 
Odermatt, S; Alonso-Gã³Mez, JL; Seiler, P; Cid, MM; Diederich, F 
2005 
Yes 
Angewandte Chemie (International Edition)
ISSN: 1433-7851
EISSN: 1521-3773 
44 
32 
5074-5078 
English 
Rings on her fingers: The chiral allenoacetylenic macrocycle 1 and the related cyclophane 2 with intriguing three-dimensional shapes were prepared and isolated in diastereoisomerically pure form. The symmetries and structures of these novel unsaturated hydrocarbons were elucidated by 1H NMR spectroscopy and X-ray crystallography. The isolated stereoisomeric cyclophanes undergo photoisomerization; presumably the anthracene moieties serve as intramolecular sensitizers. (Chemical Equation Presented) © 2005 Wiley-VCH Verlag GmbH & Co. KGaA. 
Allenes; Chirality; Cross-coupling; Macrocycles; Photoisomerization