2-Chloro-5-trichloromethylpyridine 69045-78-9

Physical and chemical properties

Appearance and properties: white semisolid

Density: 1.417 g/mL at 25 ° C (lit.)

Melting point: 32-34 ° C (lit.)

Boiling point: 152 ° C

Flash: > 230 ° F

Production methods

The preparation method is based on 3-methylpyridine as the raw material, 2-chloro-5-trichloromethylpyridine is chlorinated first, and then further fluorinated to obtain the product; The product can also be obtained by using 3-methylpyridine as raw material and fluorination reaction in the presence of catalyst. It is also possible to use 2-chloro-5-methylpyridine as the raw material, and chlorinate the side chain into 2-chloro-5-trichloromethyl pyridine with chlorine gas first, and then fluorinate the product with hydrogen fluoride.

use

It is mainly used in the production of agricultural chemicals such as pyrifos and pharmaceuticals.