eng Ansari Education and Research Society Journal of Ultra Chemistry 0973-3450 2319-8036 December 2007 3 2 137 140 juc 651 article Pradeep Yadav (pradeepyadav78@gmail.com 1 Usha Baloda 1 Y.C. Joshi 1 Department of Chemistry, University of Rajasthan, Jaipur - 302004 (Rajasthan) INDIA <p style="text-align: justify;">Reaction of [1-cyclopropyl-6-fluoro-1, 4-dihydro-4-oxo-7- (1-piperazinyl)-quinolone-3-carboxylic acid with diazoazonium salt of 2-aminopyridine in acetonitrile to get 1-cyclopropyle-6-fluoro-4-oxo-7-[4-(pyridine-2-yldiazenyl)-piperazin-1-yl]-1,4-dihydro-quinoline-3-carboxylic acid derivative. This ciprofloxacin derivative again subjected to react with various -diketone in presence of sodium methoxide to get novel -diketone derivative of 1-cyclopropyle-6-fluoro-4-oxo-7-[4-(pyridine-2-yldiazenyl)-piperazin-1-yl]-1,4-dihydro-quinoline-3-carboxylic acid. Structures of these compounds were established on the basis of spectral studies viz. IR, ¹H NMR etc. &nbsp;&nbsp;&nbsp;</p> <p>&nbsp;</p> https://journalofchemistry.org/paper/651/ spectral studies viz derivative again