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Hydantoins parabanic acids

The ureides hydantoin, parabanic acid, alloxan, barbituric acid, and 4-methyluracil show resonance energies of between 2.3 v.e. and 3.1... [Pg.139]

Imidazolin-2,4,5-trione (6, trivial name parabanic add) is an even stronger N-H add (pK = 5.43) than hydantoin. Parabanic acid is considered to be the ureide of oxalic acid, it can be prepared by cydocondensation of oxalate with urea ... [Pg.236]

Poly(parabanic acids) are close relatives of poly(hydantoins). They are also known as 2,4,5-triketoimidazolidine polymers. They can be produced by several processes, for example, from oxamidic esters and (capped) isocyanates ... [Pg.500]

See other pages where Hydantoins parabanic acids is mentioned: [Pg.1015]    [Pg.1015]    [Pg.67]    [Pg.376]    [Pg.376]    [Pg.777]    [Pg.778]    [Pg.625]    [Pg.399]    [Pg.400]   
See also in sourсe #XX -- [ Pg.14 , Pg.21 ]



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Hydantoin

Hydantoin acid

Parabanic acid

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