A common compound: 23056-33-9, name is 2-Chloro-4-methyl-5-nitropyridine,molecular formula is C6H5ClN2O2, it can change the direction of chemical reaction, and react with certain compounds to generate new functional products. A new synthetic method of this compound is introduced below., 23056-33-9
2-Chloro-4-methyl-5-nitropyridine (20.5 g, 119 mmol) was dissolved in concentrated sulfuric acid (200 ml), and chromium trioxide (40.0 g, 400 mmol) was added thereto, followed by stirring at 0 C. for 1 hour. Then, the temperature was gradually raised from 0 C. to room temperature, followed by stirring for 12 hours. The reaction solution was poured into ice-water (2000 ml), and the temperature was raised from 0 C. to room temperature. The precipitated solid was filtered and dried under reduced pressure to obtain the title compound (18 g, 750). [0144] 1H NMR (CD3OD, 400 MHz): delta 10.8 (1H, br, s), 9.13 (1H, s), 7.70 (1H, s)
With the rapid development of chemical substances, we look forward to future research findings about 23056-33-9.
Reference:
Patent; AJINOMOTO CO., LTD.; Ueno, Hirokazu; Yamamoto, Takashi; Takashita, Ryuta; Yokoyama, Ryohei; Sugiura, Toshihiko; Kageyama, Shunsuke; Ando, Ayatoshi; Eda, Hiroyuki; Eviryanti, Agung; Miyazawa, Tomoko; Kirihara, Aya; Tanabe, Itsuya; Nakamura, Tarou; Noguchi, Misato; Shuto, Manami; Sugiki, Masayuki; Dohi, Mizuki; US2015/51395; (2015); A1;,
Pyridine – Wikipedia,
Pyridine | C5H5N – PubChem