A relationship between the circular dichroism and the configuration of asymmetric nitrogen in trans(N,ethylene)-chloro-L-aminocarboxylato-.ETA.2-ethyleneplatinum(II).
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概要
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The circular dichroism (CD) peaks of <I>trans</I>(<I>N</I>, ethylene)[PtCl(L-am)(C<SUB>2</SUB>H<SUB>4</SUB>)] (L-am, L-amino carboxylate) in acetonitrile (AN) at 33000 and 37000 cm<SUP>−1</SUP> are characteristic of those complexes with asymmetric nitrogen. The CD sign depends on the substituents on the asymmetric nitrogen, and the additivity law holds for methyl and benzyl derivatives of L-prolinato, L-hydroxyprolinato, and L-valinato complexes. The quadrant rule is applicable to the contribution of the substituents on the nitrogen. On the preparation of the benzyl-L-valinato complex from Zeise's salt in a weakly acid medium the nitrogen exhibits a marked stereoselectivity to give <I>R</I> configuration.
- 公益社団法人 日本化学会の論文
著者
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Saito Kazuo
Chemistry Department, Faculty of Science, Tohoku University
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Terai Yoshiro
Chemistry Department, Faculty of Science, Tohoku University
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Kido Hiroaki
Chemistry Department, Faculty of Science, Tohoku University
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