trans-Cyclohexane-1,2-diamine is a weak director of absolute helicity in chiral nickel-salen complexes.
作者信息
Dong Zhenzhen, Yap Glenn P A, Fox Joseph M
机构信息
Brown Laboratories, Department of Chemistry and Biochemistry, University of Delaware, Newark, Delaware 19716, USA.
出版信息
J Am Chem Soc. 2007 Sep 26;129(38):11850-3. doi: 10.1021/ja073900p. Epub 2007 Aug 31.
PMID:17760445
Abstract
The interconversion between helical diastereomers of nickel-salen-based foldamers can be observed on a NMR time scale. Such complexes provide quantitative information about the propensity of different elements of central chirality to control the absolute sense of folding. trans-Cyclohexane-1,2-diamine-a common component of chiral salen catalysts-is a surprisingly weak director of absolute helicity in nickel-salen foldamers. Implications for asymmetric catalysis are discussed.
摘要
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