Cyclic sulphones. Part XIV. Ionisation constants of substituted thiopyran 1,1-dioxides
Abstract
Ionisation constants of 3-phenyl- and 6-methyl-3-phenyl-2H-thiopyran 1,1-dioxides have been determined spectrophotometrically in water and in methanol. The data are consistent with the corresponding anions being particularly stable. The results are compared with those for other sulphonyl-substituted carbon acids.