Method for chloridizing carboxylic acid to corresponding acyl chloride by utilizing environmental pollutant-carbon tetrachloride

The invention relates to the technical field of chemical industry, in particular to a method for chloridizing carboxylic acid to corresponding acyl chloride by utilizing environmental pollutant-carbon tetrachloride. The method comprises the following steps: taking the environmental pollutant-carbon tetrachloride as a chlorine source, taking anhydrous ferric chloride as a catalyst, transferring chlorine element in the carbon tetrachloride into carboxylic acid for carrying out exchange with hydroxy in carboxyl under set temperature, realizing the destruction of the carbon tetrachloride, simultaneously using the carbon tetrachloride as a chloridizing reagent of the carboxylic acid and realizing the effective utilization of the environmental pollutant-carbon tetrachloride; the method has the universal significance, and the ferric chloride catalyst has low price, is easy to be obtained and can activate the carbon tetrachloride and be applied in the process of transforming the carboxylic acid to the acyl chloride;