Preparation of optically active azophenolic crown ethers containing 1-phenylethane-1,2-diol and 2,4-dimethyl-3-oxapentane-1,5-diol as a chiral subunit: Temperature-dependent enantiomer selectivity in the complexation with chiral amines

Kazuko Ogasahara, Keiji Hirose, Tobe Yoshito, Koichiro Naemura*

*Corresponding author for this work

研究成果: Article

24 引文 斯高帕斯(Scopus)

摘要

With (2S,4S)-2,4-dimethyl-3-oxapentane-1,5-diol and (S)- or (R)-1-phenylethane-1,2-diol as chiral subunits, optically active azophenolic crown ethers (S,S,S,S)-1, (R,S,S,R)-2, (S,S,S,S)-3 and (R,S,S,R)-4 possessing two phenyl and two methyl substituents together with the p-(2,4-dinitrophenylazo)phenol moiety have been prepared in enantiomerically pure forms. Temperature-dependent enantiomer selectivity in the complexation of these crown ethers with chiral amines has been studied by the UV-visible spectroscopic method in chloroform and from the observed association constants, thermodynamic parameters for the complexation have been calculated.

原文English
頁(從 - 到)3227-3236
頁數10
期刊Journal of the Chemical Society - Perkin Transactions 1
發行號21
DOIs
出版狀態Published - 7 十一月 1997

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