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The application of empirical methods of 13C NMR chemical shift prediction as a filter for determining possible relative stereochemistry

by on Mar 13, 2013

  • 105 views

The reliable determination of stereocenters contained within chemical structures usually requires utilization of NMR data, chemical derivatization, molecular modeling, quantum-mechanical (QM) ...

The reliable determination of stereocenters contained within chemical structures usually requires utilization of NMR data, chemical derivatization, molecular modeling, quantum-mechanical (QM) calculations and, if available, X-ray analysis. In this article, we show that the number of stereoisomers which need to be thoroughly verified, can be significantly reduced by the application of NMR chemical shift calculation to the full stereoisomer set of possibilities using a fragmental approach based on HOSE codes. The applicability of this suggested method is illustrated using experimental data published for a series of complex chemical structures.

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The application of empirical methods of 13C NMR chemical shift prediction as a filter for determining possible relative stereochemistry The application of empirical methods of 13C NMR chemical shift prediction as a filter for determining possible relative stereochemistry Document Transcript