Method for producing 5-isopropyluracil
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United States of America Patent
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Jun 22, 1999
Grant Date -
N/A
app pub date -
Oct 20, 1998
filing date -
Oct 22, 1997
priority date (Note) -
Expired
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Abstract
A method for producing 5-isopropyluracil at a high yield in a short time, wherein N-(2-cyano-3-methylbutanoyl)urea is reduced in a 10-15% aqueous sulfuric acid solution in the presence of palladium carbon at 30-45.degree. C., heated for ring closure reaction and added to a 50-70% aqueous sulfuric acid solution to give 5-isopropyluracil having a high purity.
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