7-(substituted)piperazinyl-1-ethyl-6-fluoro-4-oxo-3-quinolinecarboxylic acids, the pharmacologically acceptable salts thereof, compositions containing them, processes and intermediates for producing them, and methods of using them to treat bacterial infections in warm-blooded animals.
5-Substituierte Chinolon- und Naphthyridoncarbonsäure-Derivate
申请人:BAYER AG
公开号:EP0284935A1
公开(公告)日:1988-10-05
Die Erfindung betrifft 5-substituierte Chinolon-und Naphthyridoncarbonsäure-Derivate der Formel (I)
in welcher X, Y, R', R2 und R3 die in der Beschreibung angegebene Bedeutung haben. Verfahren zu ihrer Herstellung sowie diese enthaltende antibakterielle Mittel und Futterzusatzstoffe.
7-(substituted)piperazinyl-1-ethyl-6-fluoro-4-oxo-3-quinolinecarboxylic acids, the pharmacologically acceptable salts thereof, compositions containing them, processes and intermediates for producing them, and methods of using them to treat bacterial infections in warm-blooded animals.
Catalyst-free transformations of diethyl 2-ethoxymethylenemalonate and diethyl polyfluorobenzoylmalonates in water
作者:Denis N. Bazhin、Yulia S. Kudyakova、Yanina V. Burgart、Victor I. Saloutin
DOI:10.1016/j.tetlet.2012.02.015
日期:2012.4
The unusual transformation of diethyl 2-ethoxymethylenemalonate into triethyl 1,3,5-benzenetricarboxylate is described. This one-pot reaction proceeds in water without any catalyst in a good yield. One of the proposed intermediates of this process is also used under similar conditions to give the desired trisubstituted benzene. A catalyst-free, efficient, practical, and convenient process in water based on deethoxycarbonylation has been developed to form ethyl polyfluorobenzoylacetates in a high yield from diethyl polyfluorobenzoylmalonates. (C) 2012 Elsevier Ltd. All rights reserved.
Structure of diethyl (polyfluorobenzoyl)malonates and their thermal intramolecular cyclization
作者:D. N. Bazhin、E. V. Schegol’kov、Yu. S. Kudyakova、Ya. V. Burgart、V. I. Saloutin
DOI:10.1007/s11172-011-0145-4
日期:2011.5
The reaction of the C-ethoxymagnesium derivative of diethyl malonate with polyfluorobenzoyl chlorides affords the corresponding (polyfluorobenzoyl)malonates prone to thermal cyclization into coumarin derivatives. The compounds obtained are inherent in keto—enol tautomerism.