| abstract |
The invention discloses a preparation method of 2,3-dichloropyridine. The method is to add 2-chloropyridine under the protection of an inert gas by using tert-butyl nitrite and anhydrous copper chloride as raw materials in an organic solvent. - 3-aminopyridine, 2, 3-dichloropyridine is prepared by incubating and reacting at 10-60°C for 1-10 hours. The preparation method of 2,3-dichloropyridine of the present invention adopts 2-chloro-3-aminopyridine with low cost as a raw material, has mild reaction conditions, simple operation, and the yield can reach more than 85%. |