With the rapid development and complex challenges of chemical substances, new drug synthesis pathways are usually the most effective.17403-47-3,5-Nitro-2,3-dihydrobenzofuran,as a common compound, the synthetic route is as follows.
A mixture of 21 (6.3 g, 38.1 mmol) and 10% palladium on carbon (1.0 g) in EtOH (50 mL) and THF (50 mL) was stirred under an atmosphere of H2 (1 atm) at room temperature for 13 h. The catalyst was removed by filtration, and then the filtrate was concentrated. The residue was purified by flash chromatography on SiO2 with a gradient eluent of 0-10% MeOH/EtOAc to provide 22 (4.63 g, 90%) as a pale brown powder; 1H NMR (CDCl3) delta: 3.12 (2H, t, J = 8.6 Hz), 3.37 (2H, s), 4.49 (2H, t, J = 8.6 Hz), 6.43-6.47 (1H, m) 6.57-6.61 (2H, m); Anal. Calcd for C8H9NO: C, 71.09; H, 6.71; N, 10.36. Found: C, 70.92; H, 6.60; N, 10.09.
17403-47-3, The synthetic route of 17403-47-3 has been constantly updated, and we look forward to future research findings.
Reference£º
Article; Shirai, Junya; Yoshikawa, Takeshi; Yamashita, Masayuki; Yamamoto, Yasuharu; Kawamoto, Makiko; Tarui, Naoki; Kamo, Izumi; Hashimoto, Tadatoshi; Ikeura, Yoshinori; Bioorganic and Medicinal Chemistry; vol. 19; 21; (2011); p. 6430 – 6446;,
Benzofuran – Wikipedia
Benzofuran | C8H6O – PubChem