Selective 1D TOCSY is a powerful tool in the assignment of NMR spectra of organic molecules. Here an order of magnitude improvement in selectivity, allowing overlapping multiplets to be excited separately, is achieved in a single scan using the very recent GEMSTONE method. The new experiment is illustrated using an antibiotic and a mixture of diastereomers.
P. Kiraly, M. Nilsson, G. A. Morris and R. W. Adams, Chem. Commun., 2021, 57, 2368 DOI: 10.1039/D0CC08033K
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