备注
Description for route of synthesis:
Starting from pyridine, in the presence of catalyst 1 and potassium carbonate, the reaction temperature is controlled and chlorine gas is slowly introduced for selective chlorination reaction; By adjusting the amount of chlorine gas introduced and the reaction conditions, achieve dichlorination at positions 2 and 5; After the reaction is completed, it is quenched, washed with water, dried, and then purified by distillation or recrystallization to obtain the target product 2,5-dichloropyridine.
Products protected by valid patents are not offered for sale in countries where the sale of such products constitutes a patent infringement and its liability is at buyer's risk.
Products currently covered by valid US Patents are offered for R&D use in accordance with 35 USC 271 +A13(1).
更多
