Helvetica Chimica Acta p. 1042 - 1052 (1988)
Update date:2022-08-02
Topics:
Alpha, Beatrice
Anklam, Elke
Deschenaux, Robert
Lehn, Jean-Marie
Pietraskiewicz, Marek
Synthetic procedures have been developed for the preparation of sodium and lithium cryptates of the macrobicyclic ligands 1-11 containing pyridine, bipyridine, and biisoquinoline groups.They involve stepwise construction of the bicyclic system as well as direct macrobicyclisation procedures (Scheme 1) and give access to both symmetrical and dissymmetrical structures.Marked cation template effects have been found that facilitate the cyclisation processes.The ligands 1-11 were isolated as their cryptates with Na+ or Li+ cations.
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