Thioketal
Appearance
![](http://upload.wikimedia.org/wikipedia/commons/thumb/2/25/Thioketale_Structural_Formulae_V.1.png/150px-Thioketale_Structural_Formulae_V.1.png)
In chemistry, a thioketal is the sulfur analogue of a ketal, with one of the oxygen replaced by sulfur. A dithioketal has both oxygens replaced by sulfur.
Thioketals can be obtained by reacting ketones or aldehydes with thiols.
Ketones can be reduced at neutral pH via conversion to thioketals; the thioketal prepared from the ketone can be easily reduced by catalytic hydrogenation using Raney nickel in a reaction known as the Mozingo reduction.