With the rapid development and complex challenges of chemical substances, new drug synthesis pathways are usually the most effective.286946-24-5,Methyl 3,6-dichloropyridazine-4-carboxylate,as a common compound, the synthetic route is as follows.
Example 71; Preparation of Compound 71; Step A; A solution of 3,6-dichloro pyridazine-4-carboxylic acid methyl ester (2.0 mmol, 0.41 g), diethylisopropyl amine (3.0 mmol, 0.52 mL) and piperazine-1- carboxylic acid te/t-butyl ester (2 mmol, 0.37 g) in dioxane (2 mL) was irradiated using microwave for 20 minutes at a temperature of 80 C. The reaction mixture was concentrated in vacuo, and the resulting residue was purified using flash column chromatography on silica gel (eluent: ethyl acetate) to provide compound 71 A as a yellow solid in quantitative yield. HPLC-MS RT= 1.9 min, mass calculated for formula C15H2ICIN4O4 356.13, observed LCMS m/z 357.1 (M+H).
286946-24-5, 286946-24-5 Methyl 3,6-dichloropyridazine-4-carboxylate 17861811, apyridazine compound, is more and more widely used in various fields.
Reference£º
Patent; SCHERING CORPORATION; WO2008/54749; (2008); A1;,
Pyridazine – Wikipedia
Pyridazine | C4H4N2 – PubChem