期刊
CHEMICAL PHYSICS LETTERS
卷 508, 期 1-3, 页码 149-154出版社
ELSEVIER
DOI: 10.1016/j.cplett.2011.04.012
关键词
-
资金
- UGC, India
- Department of Science and Technology, New Delhi [SR/S1/PC-32/2008]
The higher substrate and chiral auxiliary concentration is a pre-requisite to obtain efficient separation of H-1 NMR signals of enantiomers. The higher concentration of chiral lanthanide shift reagents provides broadened spectral lines resulting in a severe loss of resolution between the enantiomer resonances. In order to circumvent such difficulties, herein we present the application and the usefulness of a selective F-1 decoupled correlation (COSY) experiment which yields proton decoupled proton spectra in the indirect dimension. The potentiality of the experiment is demonstrated on several chiral compounds possessing different functional groups, employing either a lanthanide shift reagent or a solvating reagent as chiral auxiliaries. (C) 2011 Elsevier B.V. All rights reserved.
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