PREPARATION AND CHROMATOGRAPHIC SEPARATION OF DIASTEREOISOMERIC DIAZA-DIPHOSPHA-MACROCYCLES
- 1 September 1995
- journal article
- research article
- Published by Taylor & Francis in Phosphorus, Sulfur, and Silicon and the Related Elements
- Vol. 106 (1-4) , 105-114
- https://doi.org/10.1080/10426509508027895
Abstract
Chiral macrocyclic binaphthyl derivatives, containing phosphorus and nitrogen hetero atoms, have been prepared as mixtures of three diastereoisomers. Their separation on a preparative scale was achieved after two chromatographic steps using polystyrene gel and strongly deactivated silica gel to avoid irreversible adsorption. A configurational assignment of the diastereoisomers was partly possible on the basis of NMR spectroscopy.Keywords
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