Chemistry of Heterocyclic Compounds p. 538 - 540 (1992)
Update date:2022-07-29
Topics:
Ukrainets, I. V.
Bezuglyi, P. A.
Treskach, V. I.
Turov, A. V.
A comparison of several methods of preparation of N-R-substituted 4-hydroxy-2-quinolone-3-carboxylic acid amides showed that intramolecular cyclization of 2-carbalkoxymalonanilic acid ethyl esters with simultaneous amidation is the most rational method.
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