Each compound has different characteristics, and only by selecting the characteristics of the compound suitable for a specific situation can the compound be applied on a large scale. 609-71-2, name is 2-Oxo-1,2-dihydropyridine-3-carboxylic acid. This compound has unique chemical properties. The synthetic route is as follows. 609-71-2
This compound was synthesized by a method similar to the method described in . To a 50-mL round bottom flask, 2-oxo-1,2-dihydropyridine-3-carboxylic acid (500 mg, 3.59 mmol) was added, and suspended in methanol (5 mL) and water (0.8 mL), then potassium hydroxide (400 mg, 7.13 mmol) was added to the suspension, and the resulting mixture was stirred at 100C for 15 minutes. The reaction solution was returned to room temperature, iodomethane (2.6 mL, 41.8 mmol) was added to the reaction solution, and the resulting mixture was stirred at 100C for 45 minutes, and then concentrated under reduced pressure until the solvent volume was reduced by half. To the reaction solution, 3 N hydrochloric acid (20 mL) was added, and the produced solid was collected by filtration, washed with water and acetonitrile, and then dried under reduced pressure to obtain the title compound (64.9 mg, 12%) as white powder. 1H NMR(CD3 OD, 400 MHz): 8 8.43 (dd, 1H, J = 6.9, 2.3 Hz), 8.05 (dd, 1H, J = 6.9, 2.3 Hz), 6.65 (t, 1H, J = 6.9 Hz), 3.70 (s, 3H)
At the same time, in my other blogs, there are other synthetic methods of this type of compound,609-71-2, 2-Oxo-1,2-dihydropyridine-3-carboxylic acid, and friends who are interested can also refer to it.
Reference:
Patent; Nippon Chemiphar Co., Ltd.; NAGASE, Hiroshi; FUJII, Hideaki; SAITOH, Akiyoshi; NAKATA, Eriko; HIROSE, Masaaki; OOI, Isao; HAYASHIDA, Kohei; (88 pag.)EP3513792; (2019); A1;,
Pyridine – Wikipedia,
Pyridine | C5H5N – PubChem