A New Chiral Shift Reagent for Aqueous Solutions: Eu{(S,S)-Ethylenediamine-N,N'-Disuccinate}, Eu(EDDS)
Titel:
A New Chiral Shift Reagent for Aqueous Solutions: Eu{(S,S)-Ethylenediamine-N,N'-Disuccinate}, Eu(EDDS)
Auteur:
Kido, Junji Okamoto, Yoshiyuki Brittain, Harry G.
Verschenen in:
Journal of coordination chemistry
Paginering:
Jaargang 21 (1990) nr. 2 pagina's 107-110
Jaar:
1990
Inhoud:
The utility of the Eu(III) derivative of (S,S)-ethylenediamine-N,N'-disuccinic acid, Eu(EDDS), has been investigated for its use as a chiral aqueous shift reagent. Upfield shifts were observed for the α-protons of (R)- and (S)-phenylglycine, and an enantiomeric shift difference as large as 0.4 ppm was observed at an Eu(EDDS)/substrate ratio of 0.3. It was deduced from these studies that Eu(EDDS) functions as a superior chiral shift reagent above pH 8.