Method of Synthesizing Selenoureas from Thioureas.
OFFICE OF THE SECRETARY OF THE ARMY WASHINGTON D C
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The patent relates to the preparation of selenoureas having either aliphatic or aromatic substituents by displacement of the thiomethyl moiety from S-methylthiopseudoureas by hydroselenide ions in solutions having a pH of 8 to 9. This method provides yields of substituted selenoureas in the range of 60-70 percent. Selenoureas are useful in synthesizing a wide variety of seleno substituted compounds, for example the seleno substituted steroids. Modified author abstract
- Organic Chemistry