Method for producing 5-isopropyluracil

Details Method for producing 5-isopropyluracil Method for producing 5-isopropyluracil

1998-10-20

1999-06-22

Ford, John M.

Organic compounds -- part of the class 532-570 series

Organic compounds

Nitrogen attached directly or indirectly to the purine ring...

C07D23954

Patent

active

059143991

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.

REFERENCES:
patent: 2098954 (1937-11-01), Dalmer et al.
patent: 2259925 (1941-10-01), Dalmer et al.
patent: 2413303 (1946-06-01), Curd
patent: 3149106 (1964-09-01), Loers
patent: 3324127 (1967-06-01), Rafos et al.
patent: 3330640 (1967-07-01), Luckenbaugh
patent: 3560504 (1971-02-01), Gauri et al.
Chemical Abstracts, 20, 1216 (1925).
Chemical Abstracts, 70, 87733h (1969).

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