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Reaction of 3-aminoquinoline-2,4-diones with nitrourea. Synthetic route to novel 3-ureidoquinoline-2,4-diones and imidazo[4,5-c]quinoline-2,4-diones

✍ Scribed by Antonín Klásek; Antonín Lyčka; Michal Holčapek; Ignác Hoza

Book ID
108282738
Publisher
Elsevier Science
Year
2004
Tongue
French
Weight
179 KB
Volume
60
Category
Article
ISSN
0040-4020

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Reaction of 3-aminoquinoline-2,4-diones
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## Abstract magnified image 3‐Alkyl/aryl‐3‐amino‐1__H__,3__H__‐quinoline‐2,4‐diones react with alkyl/aryl isocyanates to give novel 3‐alkyl/aryl‐3‐ureido‐1__H__,3__H__‐quinoline‐2,4‐diones or 3a‐alkyl/aryl‐9b‐hydroxy‐3,3a,5,9b‐tetrahydro‐1__H__‐imidazo[4,5‐__c__]quinoline‐2,4‐diones. In some cases

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## Abstract The preparation of 2,3a,4,5‐tetrahydrofuro[2,3‐__c__]quinoline‐2,4‐diones starting from 3‐hydroxy‐1,2,3,4‐tetrahydroquinoline‐2,4‐diones and using the reaction path __via__ bromoacetylderivatives and triphenylphosphonioacetyl derivatives of the initial substances is described. The nmr s