申请人:MITSUBISHI GAS CHEMICAL COMPANY, INC.
公开号:EP1500641A1
公开(公告)日:2005-01-26
The process for producing a (fluoroalkyl)benzene derivative according to the present invention comprises a step of reducing the total content of group 3 to group 12 transition metals in an alkylbenzene derivative to 500 ppm or less in terms of metal atoms; a step of halogenating the branched alkyl group of the purified alkylbenzene derivative by a photohalogenation to obtain a (haloalkyl)benzene derivative; and a step of subjecting the (haloalkyl)benzene derivative to a halogen-fluorine exchange using HF in an amount of 10 mol or higher per one mole of the (haloalkyl)benzene derivative. The (fluoroalkyl)benzene derivative produced by the process is reduced in the content of impurities such as residual halogens and residual metals, and is useful as intermediates for functional chemical products for use in applications such as medicines and electronic materials.
根据本发明生产(氟烷基)苯衍生物的工艺包括以下步骤:将烷基苯衍生物中第3组至第12组过渡金属的总含量降低到500ppm或更低(以金属原子计);通过光卤化将纯化的烷基苯衍生物中的支链烷基卤化,得到(卤代烷基)苯衍生物;以及使用 HF 将(卤代烷基)苯衍生物进行卤氟交换,HF 的用量为每摩尔(卤代烷基)苯衍生物 10 摩尔或更高。该工艺制得的(氟烷基)苯衍生物的杂质(如残留卤素和残留金属)含量降低,可用作功能化学产品的中间体,应用于医药和电子材料等领域。