Journal
CHEMICAL PHYSICS LETTERS
Volume 555, Issue -, Pages 286-290Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/j.cplett.2012.10.085
Keywords
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Funding
- UGC
- Science and Engineering Research Board, New Delhi [SR/S1/PC-42/2011]
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NMR spectroscopic chiral visualization, unambiguous assignment of peaks pertaining to R and S enantiomers and the subsequent measurement of enantiomeric composition demands a highly resolved spectrum. The method fails when the spectrum is severely overcrowded or highly complex, thereby hampering the determination of enantiomeric excess. In order to circumvent such problems we propose the utility of pure shift spectrum obtained by resolving the chemical shift and coupling information in two orthogonal dimensions. The skew projected spectrum yields singlet's at the respective chemical shift positions, permitting the unravelling of the superimposed spectral transitions for each enantiomer and measurement of enantiomeric composition. (C) 2012 Elsevier B. V. All rights reserved.
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