Process for producing 4,5-dihydroxy-2-imidazolidinones

Details Process for producing 4,5-dihydroxy-2-imidazolidinones Process for producing 4,5-dihydroxy-2-imidazolidinones

1984-10-25

1987-03-17

Schwartz, Richard A.

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

Organic compounds

Heterocyclic carbon compounds containing a hetero ring...

C07D23340

Patent

active

046508775

ABSTRACT:
The invention concerns a process for producing cyclic ureas of the general formula (II): ##STR1## in which R is selected from the group comprising hydrogen atom and C.sub.1 -C.sub.4 alkyl radicals through condensation in aqueous medium at a pH of between 4 and 7 and at a temperature of between 40.degree. and 60.degree. C. of glyoxal with or without excess of a urea having the general formula (I):

REFERENCES:
patent: 2731472 (1956-01-01), Reibnitz
patent: 3091617 (1963-05-01), Burris
patent: 3260565 (1966-07-01), Beachem
patent: 3433799 (1969-03-01), Huber
patent: 4173645 (1979-11-01), Enders et al.

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