In homogeneous catalysis, the catalyst is in the same phase as the reactant. The number of collisions between reactants and catalyst is at a maximum.In a patent, 932-22-9, name is 4,5-Dichloro-3(2H)-pyridazinone, introducing its new discovery. Recommanded Product: 932-22-9
The functionalization of 4,5-dichloropyridazin-3(2H)-one and 4,5-dichloro-2-methyl-6-nitropyridazin-3(2H)-one was reported. A mixture of 4,5-dichloropyridazin-3(2H)-one, potassium nitrate and conc-sulfuric acid was stirred for 5 hours at 110-120C. After cooling to room temperature, the solution was slowly poured into ice-water. The resulting yellow crystals was filtered, washed with water and dried in air to give the product. A mixture of 4,5-dichloro-6- nitropyridazin-3(2H)-one and POCl3 was refluxed for 24 hours. After cooling to room temperature, the solution was evaporated under reduced pressure. The resulting residue was slowly poured into ice-water (300 mL). Chlorination of compound 4,5-dichloro-6- nitropyridazin-3(2H)-one with phosphorus oxychloride also gave 3,4,5-trichloro-6-nitropyridazine in 72% yield. Three proton signals were also detected at d 9.0 (1H), 8.64 (1H) and 6.20 (2H) ppm in the spectrum of 1H NMR.
We’ll also look at important developments in the pharmaceutical industry because understanding organic chemistry is important in understanding health, medicine, the role of 932-22-9, and how the biochemistry of the body works.Recommanded Product: 932-22-9
Reference：
Pyridazine – Wikipedia,
Pyridazine | C4H4N2365 – PubChem