With the rapid development and complex challenges of chemical substances, new drug synthesis pathways are usually the most effective.67074-63-9,4-Methyl-3,4-dihydroquinoxalin-2(1H)-one,as a common compound, the synthetic route is as follows.
A solution of 4-methyl-3,4-dihydroquinoxalin-2-(1H) -one (3.0 g, 18.5 mmol) in tetrahydrofuran (50 mL) Cooled to 0 C, lithium aluminum hydride (2.1 g, 55.3 mmol) was added in portions, The reaction was continued slowly to 25 C for 1 hour. The reaction solution was quenched with water (50 mL) ethyl acetate (30 mL x 3) was added, Combine organic phase, Dried over anhydrous sodium sulfate, filter, concentrate, The crude product was purified by silica gel column chromatography (petroleum ether: ethyl acetate = 5: 1) To give the title compound (2.5 g, yield 91.3%)., 67074-63-9
As the paragraph descriping shows that 67074-63-9 is playing an increasingly important role.
Reference£º
Patent; Shandong Xuanzhu Pharmaceutical Co., Ltd.; Wu, Yongqian; (31 pag.)CN106317027; (2017); A;,
Quinoxaline – Wikipedia
Quinoxaline | C8H6N2 | ChemSpider