Intramolecular hydrogen bonding in o-mercapto-NN-dimethylbenzamide is verified from SH and CO i.r. absorptions and n.m.r. chemical shifts of SH protons, in comparison with those of some related compounds. This is confirmed by a solvent influence study and by equilibrium constants for 1:1 complex formation with dimethyl sulphoxide.
I. I. Mires, P. R. Olivato and B. Wladislaw, J. Chem. Soc., Perkin Trans. 2, 1977, 166 DOI: 10.1039/P29770000166
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