Abstract
Pentacoordinate phosphorus compounds as intermediates or transition state species are proposed in numerous biological processes.In this thesis,sixteen isomers of chiral bisamino acyl pentacoordinate spirophosphoranes derived from L-or D-amino acids were synthesized and separated,respectively.To investigate the stereochemistry of chiral bisamino acyl pentacoordinate spirophosphoranes systematically,these isomers were characterised by nuclear magnetic resonance(NMR),single crystal X-ray diffraction,circular dichroism(CD),and the theoretical calculation of quantum chemistry.
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