| http://www.w3.org/ns/prov#value | - Replacement of the sulfur in the above-mentioned thioamides by two hydrogens may be achieved by desulfurization, for example, with a freshly prepared hydrogenation catalyst, such as Raney nickel, in an alcohol solvent, e.g. methanol, ethanol and the like, if desired, in the presence of hydrogen, or electrolytic reduction as outlined hereinabove for the reduction of the amides.
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