Macrocyclic compounds as chiral solvating agents for phosphinic, phosphonic, and phosphoric acids

作者:Ma Fengnian; Shen Xiumin; Jie Ou Yang; Deng Zhiwei; Zhang Cong*
来源:Tetrahedron: Asymmetry , 2008, 19(1): 31-37.
DOI:10.1016/j.tetasy.2007.12.004

摘要

Novel macrocyclic compounds, synthesized and used as chiral solvating agents for phosphinic, phosphonic, and phosphoric acids, are reported in this article. NMR (H-1 NMR and/or P-31 NMR) studies demonstrate that these acids have large nonequivalent chemical shifts in the presence of these macrocyclic compounds. Quantitative analyses of a series of the selected phosphinic acids with different enantiomeric purities show the high accuracy of this method.