申请人:Rohm and Haas Company
公开号:US05886210A1
公开(公告)日:1999-03-23
A method for synthesizing aromatic compounds by selectively dehalogenating aromatic starting materials is provided. Compounds may be prepared which are substituted with fluoro, chloro or bromo. The method may be used to remove halogen atoms from sites at which halogenation is not desired, and to form substantially pure halogenated compounds from mixtures of starting materials. The method uses a copper containing dehalogenation agent and an acid with the dehalogenation being controlled by a substituent such as a carboxylic acid, amide, ester, aldehyde, ketone or cyano on the aromatic ring.
提供了一种通过选择性地脱卤芳香族起始材料来合成芳香族化合物的方法。可以制备用氟、氯或溴取代的化合物。该方法可用于从不需要卤素化的位置去除卤素原子,并从起始材料的混合物中形成基本上纯净的卤代化合物。该方法使用含有铜的脱卤素剂和酸,脱卤素作用通过芳香环上的取代基如羧酸、酰胺、酯、醛、酮或腈来控制。