发明名称 PROCESS FOR PREPARING SUBSTITUTED QUINAZOLINE-2,4-DIONES
摘要 Process for the preparation of alkyl fluorobenzoates of the general formula (I) <IMAGE> in which R represents an alkyl radical and Fn represents 1 to 4 fluorine atoms which, independently of one another, are bonded to the aromatic ring, by reacting a fluorobenzoyl chloride of the general formula (II) <IMAGE> in which Fn has the above-defined meaning with an at least stoichiometric amount of an alkali metal alcoholate ROM in which R has the above-defined meaning and M represents an alkali metal from the group consisting of Li, Na and K, in the corresponding alcohol ROH at temperatures from -10 DEG C to 150 DEG C, if appropriate distilling off the solvent, and removing the alkali metal chloride formed by treating the mixture with water or by filtration.
申请公布号 CZ9402820(A3) 申请公布日期 1995.06.14
申请号 CZ19940002820 申请日期 1994.11.16
申请人 HOECHST AKTIENGESELLSCHAFT 发明人 BILLEB GILBERT DR.;TRONICH WOLFGANG DR.
分类号 C07D239/96;C07B37/10;C07C67/14;C07C69/62;C07C69/78;C07C275/42 主分类号 C07D239/96
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