A convenient synthesis of chiral dioxocyclens and application as chiral solvating agents
摘要:
This paper report. a very short and efficient synthesis of chiral dioxocyclens starting, from natural amino acids. NMR experiments undertaken to assess the chiral recognition properties of these chiral macrocycles. The NMR spectra of mandelic acid or its derivatives in the presence and absence of the chiral dioxocyclens showed that these macrocycles have different enantiomeric discriminating ability, It was revealed that this type of dioxocyclen may be promising hosts Cor chiral discrimination. (C) 2002 Elsevier Science Ltd. All rights reserved.
This article reports a short and efficient synthesis of chiral dioxocyclens starting from natural amino acids. Four new chiral dioxocyclens that contain different substituents at the chiral center were obtained. These dioxocyclens could not only be used for chiral recognition, but provide a feasible way for the synthesis of chiral cyclens.