66375-87-9Relevant articles and documents
Process for preparing antibacterial compounds
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, (2008/06/13)
4-(4-Halo-3-nitrophenyl)pyridines, useful as intermediates in the synthesis of antibacterial 1-alkyl-1,4-dihydro-4-oxo-7-pyridinyl-3-quinolinecarboxylic acids, are obtained by nitrating 4-(4-halophenyl)pyridines. The 4-(4-halo-3-nitrohenyl)pyridines may be converted to the antibacterial agents by reducing them to 4-(3-aminophenyl)pyridines and then subjecting the amino compounds to suitable known reactions.
Cyclic alkylidenyl N-(lower-alkyl)-3-(pyridinyl)anilinomethylenemalonates
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, (2008/06/13)
Cyclic alkylidenyl N-(lower-alkyl)-3-PY-anilinomethylenemalonates (I), where PY is 4- or 3-pyridinyl or 4- or 3-pyridinyl having one or two lower-alkyl substituents, are prepared by reacting cyclic alkylidenyl (lower-alkoxy)methylenemalonate (II) with N-(lower-alkyl)-3-PY-aniline (III). Also, I is heated with polyphosphoric acid to produce 1-(lower-alkyl)-1,4-dihydro-4-oxo-7-PY-3-quinolinecarboxylic acid, known antibacterial agents. The N-(lower-alkyl)-3-PY-anilines are produced by reducing the corresponding N-(3-PY-phenyl)-(lower-alkanamides).