Process for preparing 6-fluoro-2-haloquinoline

Details Process for preparing 6-fluoro-2-haloquinoline Process for preparing 6-fluoro-2-haloquinoline

C - Chemistry, Metallurgy

07

D

C07D 215/54 (2006.01) C07D 471/04 (2006.01)

Patent

CA 2158746

Method of preparation of 6-fluoro-2-halogen quinoline of general formula (I) wherein R is a hydrogen atom or an alkyl radical and Hal and Hal' are identical or different halogen atoms. The invention is characterized in that a halogenating agent is made to act on hydroxy-1 quinoline of general formula (II) wherein Hal is defined as above and R1 is defined as R excepting a hydrogen atom, the acid function being optionally released if a 6-fluoro-2-halogen quinoline is to be obtained for which R is a hydrogen atom.

Un procédé de préparation de fluoro-6 halogéno-2 quinoléine de formule générale (I) dans laquelle R est un atome d'hydrogène ou un radical alcoyle, Hal et Hal' sont des atomes d'halogène identiques ou différents, caractérisé en ce que l'on fait agir un agent d'halogénation sur l'hydroxy-1 quinolone de formule générale (II) dans laquelle Hal est défini comme ci-dessus et R1 est défini comme R à l'exception de représenter un atome d'hydrogène, puis éventuellement libère la fonction acide si l'on veut obtenir une fluoro-6 halogéno-2 quinoléine pour laquelle R est un atome d'hydrogène.

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