Synthetic Route of 328-84-7, In the next few decades, the world population will flourish. As the population grows rapidly and people all over the world use more and more resources, all industries must consider their environmental impact. 328-84-7, name is 3,4-Dichlorobenzotrifluoride belongs to chlorides-buliding-blocks compound, it is a common compound, a new synthetic route is introduced below.
EXAMPLE 1 Synthesis of 2,3-dichloro-6-trifluoromethylbenzaldehyde STR10 54 g (0.25 mol) of 3,4-dichlorobenzotrifluoride was dissolved in 500 ml of anhydrous THF, and cooled down to -70 C. with dry ice/acetone. To the solution, 190 ml (0.3 mol) of hexane solution of n-butyl lithium was added dropwise over 45 minutes, while keeping the temperature at -70 C. The reaction solution was matured for an hour at -70 C., then 30 g (0.5 mol) of methyl formate was dropped into the solution over 30 minutes, while keeping the temperature at -70 C. After the reaction solution was matured for an hour at -70 C., the temperature of the solution was elevated to room temperature. The reaction solution was poured into ice water and extracted with ether. The organic layer obtained was washed with water and then dried over anhydrous magnesium sulfate. The solvent was distilled out under reduced pressure. The resulting residue was distilled to give 47.3 g of oily product. Yield 77% (purity 95%), 84~94 C./3mmHg.
The synthetic route of 3,4-Dichlorobenzotrifluoride has been constantly updated, and we look forward to future research findings.
Reference:
Patent; Nippon Soda Co., Ltd.; US5977414; (1999); A;,
Chloride – Wikipedia,
Chlorides – an overview | ScienceDirect Topics