Chemistry of Heterocyclic Compounds p. 932 - 935 (1989)
Update date:2022-07-29
Topics:
Gavrilov, M. Yu.
Konshin, M. E.
In the presence of hydrazine hydrate or sodium ethylate, ethyl 2-<(N-phenylcarbamoyl)amino>-5,6,7,8-tetrahydroquinoline-3-carboxylate is converted to 3-amino- or 3-phenyl-1,2,3,4,6,7,8,9-octahydropyrimido<4,5-b>quinoline-2,4-dione.Compounds analogous to the latter are also obtained during heating of 2-amino-5,6,7,8-tetrahydroquinoline-3-carboxylic arylamides with phenyl isocyanate of from their N-phenylcarbamoyl derivatives.
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(1989)
