63910-43-0,With the rapid development and complex challenges of chemical substances, new drug synthesis pathways are usually the most effective.63910-43-0,4-Chloro-5-methoxypyridazin-3(2H)-one,as a common compound, the synthetic route is as follows.
Example 2 5.0 g (0.03 mol) of 5-chloro-4-methoxy-pyridazine-6-one and 5.0 g of potassium carbonate are initially charged in 50 ml of dimethyl sulphoxide, and 4.7 g (0.03 mol) of 2,4,5-trifluoro-benzonitrile are added at room temperature (about 20 C.). The mixture is stirred at room temperature for 2 hours and then poured into water, and precipitated product is filtered off with suction, washed with water and dried. 7.7 g (86% of theory) of 2-(2,5-difluoro-4-cyano-phenyl)-4-chloro-5-methoxy-pyridazin-3-one of melting point 182 C. are obtained.
63910-43-0 4-Chloro-5-methoxypyridazin-3(2H)-one 819793, apyridazine compound, is more and more widely used in various fields.
Reference£º
Patent; Bayer Aktiengesellschaft; US6551963; (2003); B1;,
Pyridazine – Wikipedia
Pyridazine | C4H4N2 – PubChem