Shape‐Persistent Chiral Alleno‐Acetylenic Macrocycles and Cyclophanes by Acetylenic Scaffolding with 1,3‐Diethynylallenes
2005; Wiley; Volume: 44; Issue: 32 Linguagem: Inglês
10.1002/anie.200501621
ISSN1521-3773
AutoresSeverin Odermatt, José Lorenzo Alonso‐Gómez, Paul Seiler, Marı́a Magdalena Cid, François Diederich,
Tópico(s)Supramolecular Chemistry and Complexes
ResumoRings on her fingers: The chiral alleno-acetylenic 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.
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