PREPARATION AND CHROMATOGRAPHIC SEPARATION OF DIASTEREOISOMERIC DIAZA-DIPHOSPHA-MACROCYCLES

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.

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