Synthetic Route of 328-87-0, Each compound has different characteristics, and only by selecting the characteristics of the compound suitable for a specific situation can the compound be applied on a large scale. 328-87-0, name is 2-Chloro-5-trifluoromethylbenzonitrile, This compound has unique chemical properties. The synthetic route is as follows.
162 grams of 92% sodium ethanolate were dissolved in 750 milliliters of dimethylformamide and 260 grams of 3-fluorophenol, 530 grams of 2-chloro-5-trifluoromethylbenzonitrile, 25 grams of Adams Copper catalyst and 25 grams of cuprus iodide were added. The mixture was heated to 150 C without reflux condenser, whereupon a reflux condenser was placed in a neck of the flask and heating was continued for 3 hours at 160C. Dimethylformamide was distilled off in vacuum. The residue was suspended in water and extracted with chloroform, the chloroform-layer separated, washed with water, filtered and evaporated. The residue was dissolved in 1500 milliliters of 96% ethanol and 500 milliliters of water, whereupon 530 grams of potassium hydroxide were added in small portions and the mixture refluxed for 18 hours. 700 milliliters of concentrated hydrochloric acid were added dropwise and ethanol evaporated, whereupon the mixture was cooled and extracted with 2000 milliliters of ether. The ether phase was separated, washed with water, dried over anhydrous magnesium sulfate and evaporated in vacuum. The residue consisted of 2-(3-fluorophenyloxy)-5-trifluoromethyl-benzoic acid as an oil. Yield: 700 grams.
The chemical industry reduces the impact on the environment during synthesis 2-Chloro-5-trifluoromethylbenzonitrile. I believe this compound will play a more active role in future production and life.
Reference:
Patent; Kefalas A/S; US3951961; (1976); A;,
Nitrile – Wikipedia,
Nitriles – Chemistry LibreTexts