Abstract
AbstractA series of halogen‐substituted tetrahydrothiophene 1,1‐dioxides (sulpholanes) were investigated by 13C, 17O and 33S NMR spectroscopy. It was shown that successive replacement of hydrogen atoms in positions 3 and 4 of the sulpholane ring led to an increase in 33S nuclei shielding. The 33S NMR chemical shift range exceeded 39 ppm. The variation of the 33S nuclei shielding with increasing number of chlorine or bromine atoms was caused by an electrostatic through‐space effect of the halogen atoms and the strongly polarized CHal bonds.
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