)
General chemical structure of a dithioketal
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.