Reactions of N-aminoquinolones with ketones - a new approach to the synthesis of tricyclic 6-fluoro-4-oxo-1,4-dihydroquinoline-3-carboxilic acids [Electronic resource] / O. N. Chupakhin, Y. A. Azev, S. G. Alexeev, S. V. Shorshnev, E. Tsoi, V. N. Charushin // Mendeleev Communications. - 1992. - N 4. - P. 151-153. - ISSN 0959-9436. - URL: http://www.sciencedirect.com/science/article/pii/S0959943692718951. - (Дата обращения: 10.10.2011)