The purposes of the carboxylic acid halide of the distillating method of the carboxylic acid halide of the halogenation of purifying and the halogenation of the purifying is obtained including at least two distilation steps

摘要

The present invention relates to it is a kind of for produce with reduced impurity content fluorinated carboxylic acid halide method, this have the fluorinated carboxylic acid halide of reduced impurity content fraction and its agricultural and pharmaceutical active compounds or their intermediate manufacture in purposes.