[EN] PROCESS FOR THE SEPARATION OF PALLADIUM CATALYST FROM CRUDE REACTION MIXTURES OF ARYL ACETIC ACIDS OBTAINED BY CARBONYLATION<br/>[FR] PROCEDE POUR SEPARER UN CATALYSEUR PALLADIUM DE MELANGES REACTIONNELS BRUTS D'ACIDES ACETIQUES ARYLE OBTENUS PAR CARBONYLATION
申请人:BASF AG
公开号:WO2004096747A1
公开(公告)日:2004-11-11
A process for the separation of palladium from solvent-free at room temperature solid crude reaction mixtures comprising aryl acetic acids of the general formula (I), wherein Z means phenyl, napht-2-yl, 9H-fluoren-2-yl, substituted carbazol-2-yl, benzoxazol-5-yl, either of which can be substituted with H, Cl-C8-alkyl optionally cyclic and optionally substituted with -F or -CI, C6-C10 -aryl optionally substituted with F or CI OR4, COR5, F , -CI ; optionally substituted pyrrolyl or dehydropyrrolyl or 1 -oxo-1,3-dehydro-isoindol 2-yl; R1 means H or Cl-C4-alkyl; R2 , R3, R4 , R5 mean independently of each other H, C1-C8 alkyl, C6-C10 -aryl optionally substituted with -For CI, or thiophenyl; which crude mixture is obtained by palladium catalyzed carbonylation, by adsorption of the palladium on solid adsorbents, characterized in that the adsorption is carried out in the absence of a reducing agent for palladium and at a temperature, where the crude reaction mixture is molten.
一种从室温下无溶剂固态粗反应混合物中分离钯的方法,该混合物包括通式(I)中的芳基乙酸,其中Z代表苯基、萘-2-基、9H-芴-2-基、取代的咔唑-2-基、苯并噁唑-5-基,其中任意一种都可以用H、Cl-C8-烷基(可选环状)取代,也可以用-F或-Cl取代,C6-C10-芳基(可选用F或Cl或OR4、COR5、F、-Cl取代);可选用吡咯基、脱氢吡咯基或1-氧代-1,3-脱氢异吲哚2-基;R1代表H或Cl-C4-烷基;R2、R3、R4、R5独立地代表H、C1-C8烷基、C6-C10-芳基(可选用F或Cl或噻吩基取代);该粗混合物通过钯催化羰基化反应获得,通过将钯吸附在固体吸附剂上来进行吸附,其特征在于在无还原剂存在的情况下,以粗反应混合物熔化时的温度进行吸附。