Table 7.

Energy to hydrate ketone (ΔE kcal/mole)^a

Rb	Sulfur oxidation state
	Thioether	Sulfoxide	Sulfone
3	−12.29	−15.74	−16.51
4	−12.23	−15.67	−16.44
6	−12.24	−15.67	−16.42

^aValues were calculated for the amount of energy required to hydrate the ketone (form the gem-diol) as shown in Figure 1.

^bR refers to the length of the alkyl chain as shown in Figure 1.